Condensed Consolidated Balance Sheets (Current Period Unaudited) - USD ($) $ in Thousands	Jun. 30, 2018	Dec. 31, 2017
Current Assets:
Cash and cash equivalents	$ 7,312	$ 12,646
Trade accounts receivable, net of allowance of $100 and $135, respectively	12,473	10,833
Inventories, net of allowance of $1,047 and $946, respectively	14,684	13,892
Contract assets	1,058	2,299
Note receivable, current portion	336	13
Prepaid expenses and other	1,113	1,593
Total current assets	36,976	41,276
Property and equipment, less accumulated depreciation of $4,631 and $4,155, respectively	11,059	11,242
Goodwill	16,288	17,641
Other intangible assets, less accumulated amortization of $12,662 and $11,900, respectively	14,851	15,568
Note receivable, less current portion		317
Restricted cash	523
Deposits and other assets	1,820	1,865
Total assets	81,517	87,909
Current Liabilities:
Accounts payable	6,796	5,110
Short-term overdraft facility	736
Mortgage note payable, current portion	96	94
Accrued expenses	4,950	4,186
Current contract liabilities	4,690	8,829
Refund liabilities	2,137	695
Total current liabilities	19,405	18,914
Long term mortgage note payable, less current portion	3,207	3,256
Long term note payable, related party	5,304	5,304
Derivative liability	230	356
Deferred tax liabilities	1,941	2,414
Other long-term liabilities	181	179
Total liabilities	30,268	30,423
Commitments and contingencies
Stockholders' Equity
Preferred stock, par value $0.001; 10,000,000 shares authorized; no shares issued at June 30, 2018 or December 31, 2017
Common stock, par value $0.001; 325,000,000 shares authorized; 28,505,054 shares issued and outstanding at June 30, 2018 and 28,406,856 shares issued and outstanding at December 31, 2017	28	28
Additional paid-in capital	169,808	169,527
Accumulated deficit	(114,695)	(108,559)
Accumulated other comprehensive loss	(3,892)	(3,510)
Total stockholders' equity	51,249	57,486
Total liabilities and stockholders' equity	$ 81,517	$ 87,909