Equity And Stock-Based Compensation (Narrative) (Details) (USD $)	3 Months Ended		6 Months Ended		12 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2012 Y	Jun. 30, 2011	Dec. 31, 2011 Y
Equity And Stock-Based Compensation [Line Items]
Compensation expense	$ 44,000
Stocks granted			40,000
Grant date fair value of options vesting	89,000	47,000	169,000	94,000
Recognition period of unrecognized compensation cost, years			0.17
Unrecognized estimated compensation cost related to non-vested stock options granted	27,000		27,000
Minimum vesting period of stock options			zero
Options exercised			95,000
Expiration period for stock options, in years			10
Realized value of option exercised			136,000
Cash received from exercise of stock options			308,000
Percentage of option currently exercisable			77.70%
Intrinsic unrealized value of all options outstanding, vested and expected to vest	430,000		430,000
Maximum vesting period of stock options			four
Weighted average remaining contractual life of all options outstanding, vested, and expected to vest			4.41		4.13
Weighted average remaining contractual life of the exercisable options outstanding			4.23		3.85
Executive Officer [Member]
Equity And Stock-Based Compensation [Line Items]
Accrued compensation expense associated with the vesting of executive employee stock grants	$ 238,000	$ 188,000	$ 476,000	$ 375,000
Class A [Member]
Equity And Stock-Based Compensation [Line Items]
Stocks granted	9,680		155,925	174,825
Options exercised			95,000
Common Stock authorized for issuance under 2010 Stock Incentive Plan	1,250,000		1,250,000
Class B [Member]
Equity And Stock-Based Compensation [Line Items]
Common Stock authorized for issuance under 2010 Stock Incentive Plan	1,250,000		1,250,000