Schedule I - Summary of Investments Other Than Investments in Related Parties (Details)
$ in Thousands

Dec. 31, 2020

USD ($)

Summary of Investments, Other than Investments in Related Parties [Abstract]

Investments classified as cash and cash equivalents

$ 47,026

Total Investments [Member]

Summary of Investments, Other than Investments in Related Parties [Abstract]

Cost

954,507

Fair value

990,286

Amount at which shown in the consolidated balance sheet

989,463

^[1]

Fixed Income Securities [Member]

Summary of Investments, Other than Investments in Related Parties [Abstract]

Cost

894,468

Fair value

919,692

Amount at which shown in the consolidated balance sheet

919,692

^[1]

Equity Securities [Member]

Summary of Investments, Other than Investments in Related Parties [Abstract]

Cost

48,437

Fair value

58,169

Amount at which shown in the consolidated balance sheet

58,169

^[1]

Bonds [Member] | Agency Collateralized Mortgage Obligations [Member]

Summary of Investments, Other than Investments in Related Parties [Abstract]

Cost

11,448

Fair value

11,931

Amount at which shown in the consolidated balance sheet

11,931

^[1]

Bonds [Member] | Agency Mortgage-backed Securities [Member]

Summary of Investments, Other than Investments in Related Parties [Abstract]

Cost

99,060

Fair value

102,107

Amount at which shown in the consolidated balance sheet

102,107

^[1]

Bonds [Member] | Asset-backed Securities [Member]

Summary of Investments, Other than Investments in Related Parties [Abstract]

Cost

108,686

Fair value

107,696

Amount at which shown in the consolidated balance sheet

107,696

^[1]

Bonds [Member] | Bank Loans [Member]

Summary of Investments, Other than Investments in Related Parties [Abstract]

Cost

11,590

Fair value

11,361

Amount at which shown in the consolidated balance sheet

11,361

^[1]

Bonds [Member] | Collateralized Mortgage Obligations [Member]

Summary of Investments, Other than Investments in Related Parties [Abstract]

Cost

5,061

Fair value

5,118

Amount at which shown in the consolidated balance sheet

5,118

^[1]

Bonds [Member] | Corporate Securities [Member]

Summary of Investments, Other than Investments in Related Parties [Abstract]

Cost

344,059

Fair value

360,241

Amount at which shown in the consolidated balance sheet

360,241

^[1]

Bonds [Member] | Mortgage-backed Securities [Member]

Summary of Investments, Other than Investments in Related Parties [Abstract]

Cost

40,675

Fair value

38,056

Amount at which shown in the consolidated balance sheet

38,056

^[1]

Bonds [Member] | Municipal Obligations [Member]

Summary of Investments, Other than Investments in Related Parties [Abstract]

Cost

43,353

Fair value

45,143

Amount at which shown in the consolidated balance sheet

45,143

^[1]

Bonds [Member] | Non-U.S. Government Obligations [Member]

Summary of Investments, Other than Investments in Related Parties [Abstract]

Cost

29,882

Fair value

30,600

Amount at which shown in the consolidated balance sheet

30,600

^[1]

Bonds [Member] | U.S. Government Obligations [Member]

Summary of Investments, Other than Investments in Related Parties [Abstract]

Cost

200,654

Fair value

207,439

Amount at which shown in the consolidated balance sheet

207,439

^[1]

Common Stocks [Member] | Consumer [Member]

Summary of Investments, Other than Investments in Related Parties [Abstract]

Cost

9,619

Fair value

11,598

Amount at which shown in the consolidated balance sheet

11,598

^[1]

Common Stocks [Member] | Energy [Member]

Summary of Investments, Other than Investments in Related Parties [Abstract]

Cost

2,046

Fair value

1,227

Amount at which shown in the consolidated balance sheet

1,227

^[1]

Common Stocks [Member] | Financial [Member]

Summary of Investments, Other than Investments in Related Parties [Abstract]

Cost

24,007

Fair value

29,064

Amount at which shown in the consolidated balance sheet

29,064

^[1]

Common Stocks [Member] | Industrial [Member]

Summary of Investments, Other than Investments in Related Parties [Abstract]

Cost

4,066

Fair value

5,180

Amount at which shown in the consolidated balance sheet

5,180

^[1]

Common Stocks [Member] | Technology [Member]

Summary of Investments, Other than Investments in Related Parties [Abstract]

Cost

1,749

Fair value

2,851

Amount at which shown in the consolidated balance sheet

2,851

^[1]

Common Stocks [Member] | Other [Member]

Summary of Investments, Other than Investments in Related Parties [Abstract]

Cost

6,950

Fair value

8,249

Amount at which shown in the consolidated balance sheet

8,249

^[1]

Commercial Mortgage Loans [Member]

Summary of Investments, Other than Investments in Related Parties [Abstract]

Cost

10,602

Fair value

11,425

Amount at which shown in the consolidated balance sheet

10,602

^[1]

Total Short-term and Other [Member]

Summary of Investments, Other than Investments in Related Parties [Abstract]

Cost

1,000

Fair value

1,000

Amount at which shown in the consolidated balance sheet

1,000

^[1]

Short-term [Member] | Certificates of Deposit [Member]

Summary of Investments, Other than Investments in Related Parties [Abstract]

Cost

1,000

Fair value

1,000

Amount at which shown in the consolidated balance sheet

$ 1,000

^[1]

[1]	Amounts presented above do not include investments of $47,026 classified as cash and cash equivalents in the consolidated balance sheet.

Protective Insurance Corp 10-K