Goodwill and Other Intangible Assets (Details) - USD ($)	3 Months Ended		12 Months Ended
	Mar. 31, 2017	Mar. 31, 2016	Dec. 31, 2016
Finite-Lived Intangible Assets [Line Items]
Gross carrying amount	$ 19,313,000		$ 19,313,000
Accumulated amortization	$ 10,421,000		$ 9,831,000
Remaining useful life	3 years 11 months 23 days		4 years 2 months 23 days
Net book value of amortizable intangible assets	$ 8,892,000		$ 9,482,000
Amortization of intangible assets	590,553	$ 590,858
Estimated amortization expense for all intangible assets [Abstract]
April 1, 2017 through December 31, 2017			1,760,000
2018			2,345,000
2019			2,339,000
2020			1,252,000
2021			892,000
Thereafter			228,000
Developed Technology [Member]
Finite-Lived Intangible Assets [Line Items]
Gross carrying amount	6,200,000		6,200,000
Accumulated amortization	$ 1,771,000		$ 1,550,000
Remaining useful life	5 years		5 years 3 months
Patents [Member]
Finite-Lived Intangible Assets [Line Items]
Gross carrying amount	$ 5,653,000		$ 5,653,000
Accumulated amortization	$ 5,623,000		$ 5,616,000
Remaining useful life	8 years		8 years 3 months
Trademarks and Trade Names [Member]
Finite-Lived Intangible Assets [Line Items]
Gross carrying amount	$ 190,000		$ 190,000
Accumulated amortization	$ 77,000		$ 75,000
Remaining useful life	8 years		8 years 3 months
Customer Relationships [Member]
Finite-Lived Intangible Assets [Line Items]
Gross carrying amount	$ 7,270,000		$ 7,270,000
Accumulated amortization	$ 2,950,000		$ 2,590,000
Remaining useful life	3 years		3 years 3 months