CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016
Cash flows provided by operating activities
Net income	$ 5,384	$ 1,422
Adjustments to reconcile net income to net cash provided by operating activities:
Severance Costs	465	0
Impairment of Long-Lived Assets to be Disposed of	222	0
Depreciation	342	383
Amortization of definite-lived intangible assets	335	289
Amortization of capitalized software development costs	469	408
Change in fair value of contingent consideration	446	(207)
Stock-based compensation expense	2,472	1,550
Provision for Doubtful Accounts	118	0
(Gain) loss on derivative instruments, net	(99)	18
Deferred income taxes	(5,505)	123
Gain (Loss) on Sale of Assets and Asset Impairment Charges	2	3
Changes in assets and liabilities
Contract receivables, net	10,006	(6,078)
Prepaid expenses and other assets	1,020	(1,249)
Accounts payable, accrued compensation and accrued expenses	(1,904)	961
Billings in excess of revenue earned	(6,897)	12,257
Accrued warranty	462	(465)
Other liabilities	370	737
Cash provided by operating activities	7,708	10,152
Cash flows from investing activities:
Capital expenditures	(112)	(79)
Proceeds from Sale of Property, Plant, and Equipment	0	30
Capitalized software development costs	(177)	(245)
Payments to Acquire Businesses, Net of Cash Acquired	(9,066)	0
Releases of cash as collateral under letters of credit	180	2,408
Cash used in investing activities	(9,175)	2,114
Cash flows from financing activities:
Proceeds from issuance of common stock on the exercise of stock options	209	833
RSUs withheld to pay taxes	(919)	(584)
Contingent consideration payments to Hyperspring, LLC	(850)	(1,421)
Cash used in financing activities	(1,560)	(1,172)
Effect of exchange rate changes on cash	391	(431)
Net (decrease) increase in cash and cash equivalents	(2,636)	10,663
Cash and cash equivalents at beginning of year	21,747	11,084
Cash and cash equivalents at end of period	$ 19,111	$ 21,747