Divestiture and Discontinued Operations (Details) - USD ($)		3 Months Ended
	Nov. 04, 2015	Mar. 31, 2016	Mar. 31, 2015
Operations
Loss from discontinued operations, net of taxes		$ 0	$ (577,000)
PAR Springer Miller Systems Inc [Member]
Operations
Total revenues		0	4,406,000
Loss from discontinued operations before income taxes		0	(1,347,000)
Benefit from income taxes		0	770,000
Loss from discontinued operations, net of taxes		0	(577,000)
Total consideration	$ 16,600,000
Consideration received	12,100,000
Consideration receivable	4,500,000
Estimated fair value of the notes receivable	3,400,000
Consideration available upon achievement of targets	$ 1,500,000
Liabilities of discontinued operations		$ 280,000	$ 441,000