Stock-Based Compensation Plans (Narrative) (Details) - USD ($) $ in Thousands	1 Months Ended	6 Months Ended
	Mar. 31, 2024	Jun. 30, 2024
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Aggregate intrinsic value of options exercised		$ 12,689
Stock Options [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Compensation expensed not yet recognized		$ 3,264
Compensation expensed not yet recognized, period for recognition		1 year 5 months 12 days
2019 Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares of common stock reserved for issuance (in shares)		9,518,753
2019 Plan [Member] \| Restricted Stock Units [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting term		4 years
Share-based compensation arrangement by share-based payment award, equity instruments other than options, grants in period		1,329,209
2019 Plan [Member] \| Performance Stock Units [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting term	3 years	3 years
Share-based compensation arrangement by share-based payment award, equity instruments other than options, performance		100.00%
Share-based compensation arrangement by share-based payment award, equity instruments other than options, grants in period	111,641	111,641
Expected volatility	72.70%
Risk-free interest rate	4.27%
Dividend yield	0.00%
2019 Plan [Member] \| Performance Stock Units [Member] \| Benchmark [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Expected volatility	57.60%
Risk-free interest rate	0.35%
2019 Plan [Member] \| RSUs and PSUs [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Compensation expensed not yet recognized, period for recognition		2 years 7 months 28 days
Unrecognized compensation costs of unvested RSUs and PSUs		$ 77,957
2019 Plan [Member] \| Maximum [Member] \| Performance Stock Units [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation arrangement by share-based payment award, equity instruments other than options, performance	200.00%
ESPP [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Issuance of common stock under employee stock purchase plan (in shares)		679,244
Shares available for future issuance (in shares)		1,534,825
Compensation expensed not yet recognized, period for recognition		4 months 20 days
Unrecognized compensation costs related to the ESPP		$ 451

Silk Road Medical Inc 10-Q