Basis of Presentation - Restatement (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016	May 11, 2017	Mar. 31, 2017	Dec. 31, 2016
Current assets:
Accounts receivable	$ 12,127		$ 12,127				$ 4,155
Total current assets	17,336		17,336				7,478
Total assets	37,119		37,119				14,254
Current liabilities:
Accrued expenses	6,819		6,819				1,747
Total current liabilities	34,592		34,592				16,801
Stockholders' deficit:
Accumulated deficit	(183,750)		(183,750)				(169,352)
Total stockholders' deficit	(5,494)		(5,494)				(2,864)
Total liabilities and stockholders' deficit	37,119		37,119				$ 14,254
CONDENSED CONSOLIDATED STATEMENT OF OPERATIONS:
Revenues	13,935	$ 9,750	30,418	$ 24,634
Gross profit	3,013	2,468	6,382	5,693
Selling, general and administrative expenses	7,224	3,586	15,982	11,138
Transaction costs	440	50	2,718	379
Operating loss from continuing operations	(4,651)	(1,168)	(12,318)	(5,824)
Loss from continuing operations before taxes	(5,397)	(2,046)	(14,525)	(7,615)
Loss from continuing operations	(5,402)	(2,051)	(14,547)	(7,630)
Net loss	$ (5,387)	(2,052)	$ (14,398)	(7,940)
Loss from continuing operations per common share: basic and diluted (in dollars per share)	$ (0.21)		$ (0.75)
Net loss per common share: basic and diluted (in dollars per share)	$ (0.21)		$ (0.74)
CONDENSED CONSOLIDATED STATEMENT OF CASH FLOWS:
Net loss	$ (5,387)	$ (2,052)	$ (14,398)	(7,940)
Change in assets and liabilities:
Accounts receivable			(4,916)	(1,981)
Accounts payable, accrued expenses and other liabilities			3,759	(332)
Net cash used in operating activities			(11,543)	$ (7,081)
Previously Reported
Current assets:
Accounts receivable	12,210		12,210
Total current assets	17,419		17,419
Total assets	37,202		37,202
Current liabilities:
Accrued expenses	6,319		6,319
Total current liabilities	34,092		34,092
Stockholders' deficit:
Accumulated deficit	(183,167)		(183,167)
Total stockholders' deficit	(4,911)		(4,911)
Total liabilities and stockholders' deficit	37,202		37,202
CONDENSED CONSOLIDATED STATEMENT OF OPERATIONS:
Revenues	14,018		30,501
Gross profit	3,096		6,465
Selling, general and administrative expenses	7,330		15,982
Transaction costs	440		2,218
Operating loss from continuing operations	(4,674)		(11,735)
Loss from continuing operations before taxes	(5,420)		(13,942)
Loss from continuing operations	(5,425)		(13,964)
Net loss	$ (5,410)		$ (13,815)
Loss from continuing operations per common share: basic and diluted (in dollars per share)	$ (0.21)		$ (0.72)
Net loss per common share: basic and diluted (in dollars per share)	$ (0.21)		$ (0.71)
CONDENSED CONSOLIDATED STATEMENT OF CASH FLOWS:
Net loss	$ (5,410)		$ (13,815)
Change in assets and liabilities:
Accounts receivable			(4,999)
Accounts payable, accrued expenses and other liabilities			3,259
Net cash used in operating activities			(11,543)
Adjustment
Current assets:
Accounts receivable	(83)		(83)
Total current assets	(83)		(83)
Total assets	(83)		(83)
Current liabilities:
Accrued expenses	500		500
Total current liabilities	500		500
Stockholders' deficit:
Accumulated deficit	(583)		(583)
Total stockholders' deficit	(583)		(583)
Total liabilities and stockholders' deficit	(83)		(83)
CONDENSED CONSOLIDATED STATEMENT OF OPERATIONS:
Revenues	(83)		(83)
Gross profit	(83)		(83)
Selling, general and administrative expenses	(106)		0
Transaction costs	0		500
Operating loss from continuing operations	23		(583)
Loss from continuing operations before taxes	23		(583)
Loss from continuing operations	23		(583)
Net loss	$ 23		$ (583)
Loss from continuing operations per common share: basic and diluted (in dollars per share)	$ 0.00		$ (0.03)
Net loss per common share: basic and diluted (in dollars per share)	$ 0.00		$ (0.03)
CONDENSED CONSOLIDATED STATEMENT OF CASH FLOWS:
Net loss	$ 23		$ (583)
Change in assets and liabilities:
Accounts receivable			83
Accounts payable, accrued expenses and other liabilities			500
Net cash used in operating activities			0
Provant
CONDENSED CONSOLIDATED STATEMENT OF OPERATIONS:
Transaction costs	$ 300		2,500
Provant | Adjustment
Current liabilities:
Accrued expenses					$ 500	$ 250
CONDENSED CONSOLIDATED STATEMENT OF OPERATIONS:
Revenues			(100)
Selling, general and administrative expenses			(100)
Transaction costs			$ 500