Stock Option Plans (Narrative) (Details) (USD $)	6 Months Ended			6 Months Ended			1 Months Ended		1 Months Ended	6 Months Ended	12 Months Ended						3 Months Ended		6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Dec. 31, 2012	Jun. 30, 2013 Stock Option [Member]	Jun. 30, 2013 Stock Option [Member] Maximum [Member]	Jun. 30, 2013 Stock Option [Member] Minimum [Member]	Mar. 31, 2000 Stock Option Plan 2000 [Member]	Dec. 31, 2012 Stock Option Plan 2000 [Member]	Mar. 31, 2000 Other Stock Plans [Member]	Jun. 30, 2013 2006 Stock Plan [Member]	Dec. 31, 2012 2006 Stock Plan [Member]	Dec. 31, 2011 2006 Stock Plan [Member]	Dec. 31, 2010 2006 Stock Plan [Member]	Dec. 31, 2009 2006 Stock Plan [Member]	Dec. 31, 2008 2006 Stock Plan [Member]	Oct. 26, 2006 2006 Stock Plan [Member]	Jun. 30, 2013 Thomos Bologna [Member]	Jun. 30, 2012 Thomos Bologna [Member]	Jun. 30, 2013 Thomos Bologna [Member]	Jun. 30, 2012 Thomos Bologna [Member]	Jun. 30, 2013 Thomos Bologna [Member] Restricted Stock Units (RSUs) [Member]	Jun. 30, 2013 Thomos Bologna [Member] Restricted Stock Units (RSUs) [Member] Minimum [Member]	Jun. 30, 2013 Thomos Bologna [Member] Stock Option [Member]	Jun. 30, 2013 Thomos Bologna [Member] Stock Option [Member] Minimum [Member]	Jun. 30, 2013 Thomos Bologna [Member] Stock Option [Member] Period One [Member]	Jun. 30, 2013 Thomos Bologna [Member] Stock Option [Member] Period Two [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares authorized								210,000			3,570,000					2,160,000
Options outstanding	1,565,390		1,749,310
Stock option granted, number of common stock shares	255,000						1,600,000		16,000																600,000	300,000
Increase in the number of shares available for issuance										200,000	200,000	200,000	200,000	200,000	200,000
Increase in the number of shares available for issuance, percent of stock outstanding										5.00%
Number of options available to grant										2,004,610
Options expiration period				10 years
Options vesting period					3 years	2 years																		18 months	36 months
Options outstanding, weighted average exercise price	$ 2.09		$ 2.12
Non-vested stock options outstanding	792,252
Non-vested stock options outstanding, Weighted average grant date fair value	$ 1.39
Unrecognized compensation costs related to non-vested stock options	$ 613,208
Unrecognized compensation costs related to non-vested stock options, recognition period	3 years 2 months 8 days
Stock options granted, average fair value	$ 1.38	$ 1.47
Average closing price of common stock																						$ 2.40		$ 1.80
Number of days, for calculating average closing price of common stock																						30 days		30 days
Number of restricted common stock granted																					270,000
Stock option granted, exercise price	$ 1.38																				$ 0				$ 1.20	$ 1.20
Share-based compensation	$ 193,844	$ 521,384															$ 44,531	$ 103,332	$ 89,061	$ 335,665			$ 129,000