Net Income Per Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2021	Sep. 30, 2021	Jun. 30, 2021	Mar. 31, 2021	Dec. 31, 2020	Sep. 30, 2020	Jun. 30, 2020	Mar. 31, 2020	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Net Income Per Share [Abstract]
Net income	$ 4,529	$ 17,396	$ 16,573	$ 13,593	$ 8,421	$ 6,177	$ 6,609	$ 8,974	$ 52,091	$ 30,181	$ 37,125
Basic [Abstract]
Weighted Average Number of Shares Issued, Basic									32,202	31,793	31,344
Weighted Average Number of Shares Outstanding, Basic (in shares)									32,202	31,793	31,344
Incremental Weighted Average Shares Attributable to Dilutive Effect [Abstract]
Restricted stock subject to vesting (in shares)									559	417	673
Shares issuable for conversion of convertible senior notes									1,564	52
Shares issuable for acquisition consideration (in shares)									198	254	226
Shares issuable for exercise of warrants									147	0	0
Weighted Average Number of Shares Outstanding, Diluted (in shares)									34,670	32,516	32,243
Earnings Per Share, Basic (in dollars per share)	$ 0.14	$ 0.54	$ 0.52	$ 0.43	$ 0.27	$ 0.19	$ 0.21	$ 0.28	$ 1.62	$ 0.95	$ 1.18
Earnings Per Share, Diluted (in dollars per share)	$ 0.13	$ 0.48	$ 0.49	$ 0.41	$ 0.26	$ 0.19	$ 0.20	$ 0.27	$ 1.50	$ 0.93	$ 1.15