CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE (LOSS) INCOME (Unaudited) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Statement of Comprehensive Income [Abstract]
Net (loss) income	$ (2,668,184)	$ 1,330,947	$ 2,594,195	$ (1,470,851)
Other comprehensive (loss) income, net of taxes:
Foreign currency translation	(4,477)	(12,184)	(30,978)	(138,470)
Net unrealized gain on marketable securities	657	2,433	4,676	618
Net minimum pension liability	3,341	3,612	5,808	4,104
Total other comprehensive loss, net of taxes:	(479)	(6,139)	(20,494)	(133,748)
Total comprehensive (loss) income	(2,668,663)	1,324,808	2,573,701	(1,604,599)
Less: Accrual of Series A redeemable convertible preferred stock dividends	186,904	186,904	377,690	373,808
Less: Accretion to redemption value of Series A redeemable convertible preferred stock	143,557	120,531	280,974	235,907
Total comprehensive (loss) income attributable to common stockholders	$ (2,999,124)	$ 1,017,373	$ 1,915,037	$ (2,214,314)