Consolidated Balance Sheets - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016
Current Assets:
Cash and cash equivalents	$ 8,165	$ 3,938
Accounts receivable, net of allowance for doubtful accounts of $64 in 2017 and $50 in 2016	4,488	5,837
Prepaid expenses and other current assets	1,212	1,079
Total Current Assets	13,865	10,854
Property and equipment:
Computer software	3,614	3,085
Office furniture and equipment	1,961	1,680
Laboratory equipment	15,504	15,182
Leasehold improvements	2,402	2,311
Property and equipment - gross	23,481	22,258
Less–accumulated depreciation and amortization	(11,670)	(8,900)
Property and equipment - net	11,811	13,358
Other assets	832	820
Total Assets	26,508	25,032
Current Liabilities:
Accounts payable	398	1,363
Accrued expenses	2,870	1,988
Current portion of long-term debt	957	1,144
Total Current Liabilities	4,225	4,495
Long-term debt	2,420	2,237
Deferred tax liabilities, long-term	1,243	2,693
Total Liabilities	7,888	9,425
Commitments and Contingencies (Note 9)
Shareholders' Equity:
Preferred stock, $0.005 par value, 873 shares authorized, no shares issued or outstanding
Common stock, $0.005 par value; 50,000 shares authorized 6,160 shares issued in 2017 and 6,128 shares issued 2016, 5,492 shares outstanding in 2017 and 5,460 shares outstanding in 2016	31	31
Accumulated other comprehensive loss	(238)
Additional paid-in capital	31,022	30,603
Less - Treasury stock, at cost, 668 shares	(10,082)	(10,082)
Accumulated deficit	(2,113)	(4,945)
Total Shareholders' Equity	18,620	15,607
Total Liabilities and Shareholders' Equity	$ 26,508	$ 25,032