Consolidated Statements of Equity - USD ($) shares in Thousands, $ in Thousands	Class A common stock Common Stock [Member]	Class B common stock Common Stock [Member]	Accumulated Deficit	Accumulated Other Comprehensive (Loss) Income	Additional Paid-In Capital	Non-controlling Interest	Total
Beginning Balance at Dec. 31, 2018	$ 22	$ 7	$ (4,450)	$ (1,316)	$ 262,219	$ 64,496	$ 320,977
Beginning Balance (in shares) at Dec. 31, 2018	21,620	6,547
Increase (Decrease) in Stockholders' Equity
Exchange of LLC Interests held by LLC Owners	$ 1	$ (1)		(31)	5,049	(5,018)
Exchange of LLC Interests held by LLC Owners (in shares)	519	(519)
Net increase in deferred tax asset from LLC Interest transactions					3,138		3,138
Accrued tax distributions						(257)	(257)
Other comprehensive income				406		133	539
Stock based compensation expense					1,195	349	1,544
Exercise of Options to purchase Common Stock					315		315
Exercise of Options to purchase Common Stock (in shares)	17
Issuance of stock for vesting of RSU's (in shares)	1
Net (loss) income			1,611			715	2,326
Ending Balance at Mar. 31, 2019	$ 22	$ 6	(2,839)	(941)	271,916	60,418	328,582
Ending Balance (in shares) at Mar. 31, 2019	22,157	6,028
Beginning Balance at Dec. 31, 2018	$ 22	$ 7	(4,450)	(1,316)	262,219	64,496	$ 320,977
Beginning Balance (in shares) at Dec. 31, 2018	21,620	6,547
Increase (Decrease) in Stockholders' Equity
Exercise of Options to purchase Common Stock (in shares)							119
Ending Balance at Dec. 31, 2019	$ 23	$ 5	(15,903)	(1,131)	300,120	45,196	$ 328,310
Ending Balance (in shares) at Dec. 31, 2019	23,554	4,752
Increase (Decrease) in Stockholders' Equity
Exchange of LLC Interests held by LLC Owners	$ 1	$ (1)		(43)	6,665	(6,622)
Exchange of LLC Interests held by LLC Owners (in shares)	703	(703)
Net increase in deferred tax asset from LLC Interest transactions					3,199		3,199
Accrued tax distributions						(106)	(106)
Other comprehensive income				(481)		(93)	(574)
Stock based compensation expense					2,142	416	2,558
Exercise of Options to purchase Common Stock					1,002		$ 1,002
Exercise of Options to purchase Common Stock (in shares)	46						46
Issuance of stock for vesting of RSU's					(255)		$ (255)
Issuance of stock for vesting of RSU's (in shares)	15
Net (loss) income			(2,103)			(530)	(2,633)
Ending Balance at Mar. 31, 2020	$ 24	$ 4	$ (18,006)	$ (1,655)	$ 312,874	$ 38,262	$ 331,503
Ending Balance (in shares) at Mar. 31, 2020	24,318	4,049