Consolidated Balance Sheets - USD ($)	Dec. 31, 2018	Dec. 31, 2017
Current assets:
Cash and cash equivalents	$ 10,159,000	$ 5,097,000
Restricted cash	307,000	306,000
Investments - short term	394,000	1,201,000
Accounts receivable, net of allowance for doubtful accounts of $87,000 and $67,000 in 2017 and 2018, respectively	9,247,000	8,746,000
Financing receivables - current, net of allowance for doubtful accounts of $-0- in 2017 and 2018	1,036,000	1,295,000
Inventory, net	4,649,000	4,586,000
Deferred costs - current	3,660,000	4,296,000
Prepaid expenses and other current assets	3,208,000	3,627,000
Total current assets	32,660,000	29,154,000
Investments - long term	4,131,000	10,278,000
Financing receivables - less current portion	1,254,000	1,557,000
Deferred costs - less current portion	5,409,000	4,302,000
Fixed assets, net	2,149,000	2,747,000
Goodwill	7,318,000	7,318,000
Intangible assets, net	4,705,000	5,417,000
Other assets	177,000	159,000
Total assets	57,803,000	60,932,000
Current liabilities:
Accounts payable and accrued expenses	8,027,000	7,440,000
Deferred revenue - current	7,902,000	9,711,000
Acquisition related contingent consideration and payable - current	946,000	1,923,000
Total current liabilities	16,875,000	19,074,000
Deferred revenue - less current portion	9,186,000	7,738,000
Acquisition related contingent consideration - less current portion		854,000
Deferred rent	208,000	295,000
Total liabilities	26,269,000	27,961,000
Commitments and Contingencies (Note 20)
STOCKHOLDERS' EQUITY
Preferred stock; authorized 5,000,000 shares, $0.01 par value; none issued
Common stock; authorized 50,000,000 shares, $0.01 par value; 18,327,000 and 19,178,000 shares issued at December 31, 2017 and 2018, respectively; shares outstanding, 17,440,000 and 18,166,000 at December 31, 2017 and 2018, respectively	192,000	183,000
Additional paid-in capital	138,693,000	133,569,000
Accumulated deficit	(101,180,000)	(95,368,000)
Accumulated other comprehensive loss	(435,000)	(578,000)
Treasury stock; 887,000 and 1,012,000 common shares at cost at December 31, 2017 and 2018, respectively	(5,736,000)	(4,835,000)
Total stockholders' equity	31,534,000	32,971,000
Total liabilities and stockholders' equity	$ 57,803,000	$ 60,932,000