Amortized Cost/Cost, Gross Unrealized Gains and Losses, Estimated Fair Values and Impairments Reflected in Other Comprehensive Income ("OCI") of Investments in Fixed Maturity and Equity Available-for-Sale Securities (Detail) - USD ($)
$ in Thousands

Sep. 30, 2016

Dec. 31, 2015

Schedule of Available-for-sale Securities [Line Items]

Fixed maturity available-for-sale securities, amortized cost

$ 1,471,852

$ 1,570,693

Gross Unrealized Gains

185,716

114,402

Gross Unrealized Losses

(3,181)

(19,758)

Fixed maturity available-for-sale securities, at estimated fair value

1,654,387

1,665,337

Gross Unrealized OTTI in AOCI

^[1]

(42)

Equity available-for-sale securities, cost

31,264

33,777

Gross Unrealized Gains

2,186

1,972

Gross Unrealized Losses

(99)

(1,082)

Equity available-for-sale securities, at estimated fair value

33,351

34,667

Gross Unrealized OTTI in AOCI

^[1]

Banking securities

Schedule of Available-for-sale Securities [Line Items]

Equity available-for-sale securities, cost

25,473

27,986

Gross Unrealized Gains

2,094

1,769

Gross Unrealized Losses

(99)

(1,082)

Equity available-for-sale securities, at estimated fair value

27,468

28,673

Gross Unrealized OTTI in AOCI

^[1]

Industrial securities

Schedule of Available-for-sale Securities [Line Items]

Equity available-for-sale securities, cost

5,791

Gross Unrealized Gains

203

Equity available-for-sale securities, at estimated fair value

5,883

5,994

Gross Unrealized OTTI in AOCI

^[1]

Corporate securities

Schedule of Available-for-sale Securities [Line Items]

Fixed maturity available-for-sale securities, amortized cost

891,366

977,900

Gross Unrealized Gains

83,906

57,648

Gross Unrealized Losses

(2,502)

(18,756)

Fixed maturity available-for-sale securities, at estimated fair value

972,770

1,016,792

Asset-backed securities

Schedule of Available-for-sale Securities [Line Items]

Fixed maturity available-for-sale securities, amortized cost

57,840

118,993

Gross Unrealized Gains

3,106

4,140

Gross Unrealized Losses

(300)

(479)

Fixed maturity available-for-sale securities, at estimated fair value

60,646

122,654

Gross Unrealized OTTI in AOCI

^[1]

(42)

Commercial mortgage-backed securities

Schedule of Available-for-sale Securities [Line Items]

Fixed maturity available-for-sale securities, amortized cost

73,008

70,083

Gross Unrealized Gains

4,381

1,904

Gross Unrealized Losses

(9)

(304)

Fixed maturity available-for-sale securities, at estimated fair value

77,380

71,683

Residential mortgage-backed securities

Schedule of Available-for-sale Securities [Line Items]

Fixed maturity available-for-sale securities, amortized cost

142,010

56,527

Gross Unrealized Gains

2,843

2,819

Gross Unrealized Losses

(267)

(81)

Fixed maturity available-for-sale securities, at estimated fair value

144,586

59,265

Municipals

Schedule of Available-for-sale Securities [Line Items]

Fixed maturity available-for-sale securities, amortized cost

910

913

Gross Unrealized Losses

(103)

(106)

Fixed maturity available-for-sale securities, at estimated fair value

807

Government and government agencies - United States

Schedule of Available-for-sale Securities [Line Items]

Fixed maturity available-for-sale securities, amortized cost

295,205

339,686

Gross Unrealized Gains

89,727

46,634

Gross Unrealized Losses

(32)

Fixed maturity available-for-sale securities, at estimated fair value

384,932

386,288

Government and government agencies - Foreign

Schedule of Available-for-sale Securities [Line Items]

Fixed maturity available-for-sale securities, amortized cost

11,513

6,591

Gross Unrealized Gains

1,753

1,257

Fixed maturity available-for-sale securities, at estimated fair value

$ 13,266

$ 7,848

[1]	Represents other-than-temporary impairments ("OTTI") in Accumulated Other Comprehensive Income ("AOCI"), which were not included in earnings. Amount excludes $2,863 and $2,515 of unrealized gains at September 30, 2016 and December 31, 2015, respectively.

TRANSAMERICA ADVISORS LIFE INSURANCE Co 10-Q