Income Taxes (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015
Current income tax [Abstract]
Federal	$ 61	$ 221
State	167	141
Foreign	211	267
Total	439	629
Deferred income tax [Abstract]
Federal	768	816
State	(60)	55
Total	708	871
Provision for income taxes	1,147	1,500
Deferred tax benefit related to discontinued operations	400	3,200
Deferred tax liabilities (assets) [Abstract]
Software development costs	2,223	1,841
Acquired intangible assets	1,731	2,088
Gross deferred tax liabilities	3,954	3,929
Allowances for bad debts and inventory	(4,505)	(4,804)
Capitalized inventory costs	(104)	(75)
Intangible assets	(1,388)	(1,747)
Employee benefit accruals	(2,089)	(2,050)
Federal net operating loss carryforward	(5,820)	(6,215)
State net operating loss carryforward	(1,085)	(1,111)
Tax credit carryforwards	(6,888)	(8,760)
Foreign currency	(33)	(33)
Other	(1,333)	(334)
Gross deferred tax assets	(23,245)	(25,129)
Less valuation allowance	1,874	3,421
Net deferred tax assets	(17,417)	$ (17,779)
State [Member]
Tax Credit Carryforward [Line Items]
Tax credit carryforwards	200
Federal [Member]
Tax Credit Carryforward [Line Items]
Tax credit carryforwards	$ 6,700