Revenue - Schedule of Impact the Adoption of ASC 606 on Consolidated Financial Statements (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017	Dec. 31, 2017
Total current assets	$ 26,657		$ 26,657		$ 22,242
Total noncurrent assets	33,174		33,174
Total assets	59,831		59,831		59,014
Total current liabilities	13,725		13,725		8,680
Total noncurrent liabilities	13,723		13,723
Total liabilities	27,448		27,448		14,892
Retained earnings	13,884		13,884		25,570
Other stockholders' equity	18,499		18,499
Total stockholders’ equity	32,383		32,383		44,122
Total liabilities and stockholders’ equity	59,831		59,831		$ 59,014
Total net revenues	16,453	$ 19,559	46,458	$ 56,885
Total cost of revenues	12,923	14,240	38,788	41,852
Gross profit	3,530	5,319	7,670	15,033
Total selling and administrative expenses	4,523	4,771	15,939	15,913
Loss on disposal of assets	(799)		(2,130)
Loss from operations	(1,792)	548	(10,399)	(880)
Other income	561	(392)	718	(500)
Loss before income taxes and equity method investment loss	(1,231)	156	(9,681)	(1,380)
Income tax expense	497	440	1,837	2,709
Equity method investment loss	507	(753)	(244)	1,516
Net loss	$ (1,221)	$ (1,037)	$ (11,762)	$ (2,622)
Net loss per share of common stock: Basic	$ (0.08)	$ (0.07)	$ (0.82)	$ (0.18)
Net loss per share of common stock: Diluted	$ (0.08)	$ (0.07)	$ (0.82)	$ (0.18)
Balances without Adoption of ASC 606 [Member]
Total current assets	$ 26,725		$ 26,725
Total noncurrent assets	33,174		33,174
Total assets	59,899		59,899
Total current liabilities	13,808		13,808
Total noncurrent liabilities	13,723		13,723
Total liabilities	27,531		27,531
Retained earnings	13,869		13,869
Other stockholders' equity	18,499		18,499
Total stockholders’ equity	32,368		32,368
Total liabilities and stockholders’ equity	59,899		59,899
Total net revenues	16,555		46,645
Total cost of revenues	13,004		38,992
Gross profit	3,551		7,653
Total selling and administrative expenses	4,463		15,861
Loss on disposal of assets	(799)		(2,130)
Loss from operations	(1,711)		(10,338)
Other income	561		718
Loss before income taxes and equity method investment loss	(1,150)		(9,620)
Income tax expense	497		1,837
Equity method investment loss	507		(244)
Net loss	$ (1,140)		$ (11,701)
Net loss per share of common stock: Basic	$ (0.08)		$ (0.81)
Net loss per share of common stock: Diluted	$ (0.08)		$ (0.81)
Difference Between Revenue Guidance in Effect Before and After Topic 606 [Member] | Adjustments for New Accounting Pronouncement [Member]
Total current assets	$ 68		$ 68
Total noncurrent assets
Total assets	68		68
Total current liabilities	83		83
Total noncurrent liabilities
Total liabilities	83		83
Retained earnings	(15)		(15)
Other stockholders' equity
Total stockholders’ equity	(15)		(15)
Total liabilities and stockholders’ equity	68		68
Total net revenues	102		187
Total cost of revenues	81		204
Gross profit	21		(17)
Total selling and administrative expenses	(60)		(78)
Loss on disposal of assets
Loss from operations	81		61
Other income
Loss before income taxes and equity method investment loss	81		61
Income tax expense
Equity method investment loss
Net loss	$ 81		$ 61