CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	3 Months Ended		6 Months Ended		12 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017	Dec. 31, 2016
CASH FLOWS FROM OPERATING ACTIVITIES:
Net (loss) income			$ (10,954)	$ 5,547
Loss from discontinued operations	$ (33)	$ (92)	(60)	(247)
(Loss) income from continuing operations	(6,083)	(688)	(10,894)	5,794
Adjustments to reconcile net cash used in operating activities:
Depreciation and amortization expense	2,349	2,203	4,706	4,304
Deferred income taxes			(42)	(5,034)
Impairment charges	4,993		4,993
Stock-based compensation			489	462
Allowance for doubtful accounts			(25)	5
Common stock issued under defined contribution 401(k) plan			338
Gain on disposal of assets				(12)
Changes in operating assets and liabilities, net of acquisition:
Accounts receivable			(4,232)	(6,846)
Inventories			(1,003)	4,586
Prepaid expenses and other current assets			49	829
Accounts payable			4,823	(2,609)
Accrued liabilities			325	(3,177)
Customer deposits			(1,141)	(12,833)
Other non-current assets and liabilities			(1,179)	28
Net cash used in operating activities of continuing operations			(2,793)	(14,503)
CASH FLOWS FROM INVESTING ACTIVITIES:
Cash paid in acquisition				(16,449)
Sales of available for sale securities				2,221
Maturities of available for sale securities				950
Purchases of property and equipment			(1,676)	(4,304)
Proceeds from disposals of property and equipment				67
Net cash used in investing activities of continuing operations			(1,676)	(17,515)
CASH FLOWS FROM FINANCING ACTIVITIES:
Proceeds from line of credit			66,985	96,565
Payments on line of credit			(63,200)	(82,852)
Proceeds from long-term debt			1,410
Payments on long-term debt			(313)
Principal payments on capital leases			(377)	(317)
Net cash provided by financing activities of continuing operations			4,505	13,396
DISCONTINUED OPERATIONS:
Operating cash flows			(38)	64
Net cash (used in) provided by discontinued operations			(38)	64
Add: Cash balance of discontinued operations, beginning of period					$ 2
NET DECREASE IN CASH AND CASH EQUIVALENTS			(2)	(18,556)
CASH AND CASH EQUIVALENTS beginning of the period			78	18,738
CASH AND CASH EQUIVALENTS end of the period	$ 76	182	76	182	$ 18,738
Supplemental cash flow information:
Interest paid			537	217
Income taxes paid			84	22
Non-cash activities:
Issuance of restricted stock grants			$ 489	462
Contingent consideration related to business acquisition		$ 2,534		2,534
Red Wolf acquisition:
Assets acquired				26,491
Liabilities assumed				$ 7,508