Restatement of the Consolidated Financial Statements - Restatement of Balance Sheet (Details) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017	Sep. 30, 2017	Dec. 31, 2016	Jan. 13, 2016	Dec. 31, 2015
Current assets:
Cash and cash equivalents	$ 45,118	$ 27,476		$ 30,321		$ 26,301
Accounts receivable, net				1,927
Inventory, net	15,986	9,467		15,872
Prepaid expenses	6,673	2,125		1,838
Other current assets	5,818	9,023		9,516
Total current assets	74,049	48,747		59,474
Property and equipment, net	17,424	14,091		13,985
Goodwill	19,976	19,976	$ 20,200	20,203	$ 16,163
Intangible assets, net	9,608	10,033		23,258
Deferred tax asset, net	0	25,541		0
Other assets	1,787	2,867		354
Total assets	122,844	121,255		117,274
Current liabilities:
Accounts payable	14,864	8,454		12,412
Accrued compensation	23,024	20,941		12,691
Accrued expenses	31,842	15,768		19,207
Current portion of earn out liability				8,260
Deferred tax liability, net				1,129
Income taxes				5,611
Other current liabilities	1,817	647		1,482
Total current liabilities	71,547	45,810		60,792
Earn out liability				7,540
Other liabilities	1,642	1,648		875
Total liabilities	73,189	47,458		69,207
Stockholders’ equity:
Preferred stock; $.001 par value; 5,000,000 shares authorized and 0 shares issued and outstanding	0	0		0
Common stock; $0.001 par value; 150,000,000 shares authorized; 110,212,547 issued and 109,862,787 outstanding at December 31, 2016	113	113		110
Additional paid-in capital	164,744	164,649		161,481
Treasury stock at cost: 349,760 shares at December 31, 2016	(38,642)	(44,384)		(2,216)
Accumulated deficit	(76,560)	(46,581)		(111,308)
Total stockholders’ equity	49,655	73,797		48,067		34,724
Total liabilities and stockholders’ equity	$ 122,844	$ 121,255		117,274
Previously Reported
Current assets:
Cash and cash equivalents				34,391		28,486
Accounts receivable, net				67,151
Inventory, net				17,814
Prepaid expenses				5,894
Other current assets				1,288
Total current assets				126,538
Property and equipment, net				13,786
Goodwill				20,203
Intangible assets, net				23,268
Deferred tax asset, net				9,114
Other assets				354
Total assets				193,263
Current liabilities:
Accounts payable				11,436
Accrued compensation				12,365
Accrued expenses				10,941
Current portion of earn out liability				8,740
Deferred tax liability, net				0
Income taxes				5,768
Other current liabilities				1,482
Total current liabilities				50,732
Earn out liability				8,710
Other liabilities				821
Total liabilities				60,263
Stockholders’ equity:
Preferred stock; $.001 par value; 5,000,000 shares authorized and 0 shares issued and outstanding				0
Common stock; $0.001 par value; 150,000,000 shares authorized; 110,212,547 issued and 109,862,787 outstanding at December 31, 2016				110
Additional paid-in capital				161,261
Treasury stock at cost: 349,760 shares at December 31, 2016				(2,216)
Accumulated deficit				(26,155)
Total stockholders’ equity				133,000		107,988
Total liabilities and stockholders’ equity				193,263
Adjustments
Current assets:
Cash and cash equivalents				(4,070)		(2,185)
Accounts receivable, net				(65,224)
Inventory, net				(1,942)
Prepaid expenses				(4,056)
Other current assets				8,228
Total current assets				(67,064)
Property and equipment, net				199
Goodwill				0
Intangible assets, net				(10)
Deferred tax asset, net				(9,114)
Other assets				0
Total assets				(75,989)
Current liabilities:
Accounts payable				976
Accrued compensation				326
Accrued expenses				8,266
Current portion of earn out liability				(480)
Deferred tax liability, net				1,129
Income taxes				(157)
Other current liabilities				0
Total current liabilities				10,060
Earn out liability				(1,170)
Other liabilities				54
Total liabilities				8,944
Stockholders’ equity:
Preferred stock; $.001 par value; 5,000,000 shares authorized and 0 shares issued and outstanding				0
Common stock; $0.001 par value; 150,000,000 shares authorized; 110,212,547 issued and 109,862,787 outstanding at December 31, 2016				0
Additional paid-in capital				220
Treasury stock at cost: 349,760 shares at December 31, 2016				0
Accumulated deficit				(85,153)
Total stockholders’ equity				(84,933)		$ (73,264)
Total liabilities and stockholders’ equity				$ (75,989)