Condensed Consolidated Balance Sheets (Current Period Unaudited) - USD ($) $ in Thousands	Sep. 30, 2018	Dec. 31, 2017
Current Assets:
Cash and cash equivalents	$ 2,690	$ 12,646
Trade accounts receivable, net of allowance of $124 and $135, respectively	12,174	10,833
Inventories, net of allowance of $1,204 and $946, respectively	16,052	13,892
Contract assets	1,575	2,299
Note receivable, current portion	337	13
Prepaid expenses and other	1,769	1,593
Total current assets	34,597	41,276
Property and equipment, less accumulated depreciation of $4,905 and $4,155, respectively	10,906	11,242
Goodwill	16,243	17,641
Other intangible assets, less accumulated amortization of $13,014 and $11,900, respectively	14,397	15,568
Note receivable, less current portion		317
Restricted cash	523
Convertible note receivable	500
Deposits and other assets	1,791	1,865
Total assets	78,957	87,909
Current Liabilities:
Accounts payable	5,712	5,110
Short-term overdraft facility	1,278
Line of credit	657
Mortgage note payable, current portion	97	94
Accrued expenses	4,528	4,186
Current contract liabilities	3,657	8,829
Refund liabilities	2,518	695
Total current liabilities	18,447	18,914
Long term mortgage note payable, less current portion	3,182	3,256
Long term note payable, related party	5,304	5,304
Derivative liability	192	356
Deferred tax liabilities	1,922	2,414
Other long-term liabilities	195	179
Total liabilities	29,242	30,423
Commitments and contingencies
Stockholders' Equity
Preferred stock, par value $0.001; 10,000,000 shares authorized; no shares issued at September 30, 2018 or December 31, 2017
Common stock, par value $0.001; 325,000,000 shares authorized; 28,529,606 shares issued and outstanding at September 30, 2018 and 28,406,856 shares issued and outstanding at December 31, 2017	28	28
Additional paid-in capital	169,856	169,527
Accumulated deficit	(116,229)	(108,559)
Accumulated other comprehensive loss	(3,940)	(3,510)
Total stockholders' equity	49,715	57,486
Total liabilities and stockholders' equity	$ 78,957	$ 87,909