Stock-Based Compensation And Employee Stock Option Plan (Narrative) (Details) (USD $)	12 Months Ended				12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010	Apr. 01, 2010 Executive Officer [Member]	Dec. 31, 2012 Class A [Member]	Dec. 31, 2010 Class A [Member]	Dec. 31, 2010 Class A [Member] Executive Officer [Member]	Dec. 31, 2012 Class A [Member] Employee Stock [Member]	Dec. 31, 2012 Incremental Shares Issued [Member]	Dec. 31, 2012 Minimum [Member]	Dec. 31, 2012 Maximum [Member]	Dec. 31, 2012 Restricted Stock [Member]	Dec. 31, 2011 Restricted Stock [Member]	Dec. 31, 2010 Restricted Stock [Member]	Dec. 31, 2012 Restricted Stock [Member] Executive Officer [Member]	Dec. 31, 2011 Restricted Stock [Member] Executive Officer [Member]	Dec. 31, 2010 Restricted Stock [Member] Executive Officer [Member]
Equity And Stock-Based Compensation [Line Items]
Value of stock granted															$ 950,000	$ 750,000	$ 750,000
Shares granted												227,570	155,925	174,825	217,890	155,925	174,825
Share price of stock granted															$ 4.36	$ 4.81	$ 4.29
Restricted sale period															5 years
Restricted shares issued															155,925
Shares issued, price per share															$ 4.81
Fair value of shares issued															750,000
Stock issued					95,000	90,000	5,154	9,680
Compensation expense	285,000	189,000	67,000					44,000
Value of options vested							100,000
Restricted stock expense	994,000	750,000	754,000
Value of incentive interest revoked				0
Stock issued, exercise price					$ 4.68	$ 2.76
Options granted	206,000		157,700
Unrecognized estimated compensation cost related to non-vested stock options granted	342,000
Recognition period of unrecognized compensation cost	2 years 4 months 17 days
Realized value of option exercised	136,000		138,000						103,000
Grant date fair value of options vesting	285,000	189,000	67,000
Cash received from exercise of stock options	308,000		248,000
Options exercised	95,000				136,000	90,000			41,000
In the money shares exercise of options, net									15,822
Exercise price per share						$ 2.76			$ 4.01
Market price per share									$ 6.53
Intrinsic unrealized value of all options outstanding, vested and expected to vest	$ 509,000
Percentage of option currently exercisable	100.00%
Expiration period for stock options	10 years
Common Stock authorized for issuance under 2010 Stock Incentive Plan	1,250,000
Vesting period of stock options										0 years	4 years
Weighted average remaining contractual life of all options outstanding, vested, and expected to vest	5 years 8 months 23 days	4 years 1 month 17 days
Weighted average remaining contractual life of the exercisable options outstanding	4 years 5 months 12 days	3 years 10 months 6 days