Equity And Stock-Based Compensation (Narrative) (Details) (USD $)	3 Months Ended		12 Months Ended
	Mar. 31, 2015	Mar. 31, 2014	Dec. 31, 2014
Equity And Stock-Based Compensation [Line Items]
Unrecognized tax benefits from stock option exercises	$ 0	$ 0
Grant date fair value of options vesting	57,000	34,000
Unrecognized estimated compensation cost related to non-vested stock options granted	427,000
Recognition period of unrecognized compensation cost	2 years 4 months 17 days
Intrinsic unrealized value of all options outstanding, vested and expected to vest	2,400,000
Percentage of option currently exercisable	63.00%
Expiration period for stock options	10 years
Common Stock authorized for issuance under 2010 Stock Incentive Plan	1,250,000
Weighted average remaining contractual life of all options outstanding, vested, and expected to vest	2 years 7 months 21 days		2 years 5 months 9 days
Weighted average remaining contractual life of the exercisable options outstanding	3 years 18 days		3 years 1 month 10 days
Class A Nonvoting Common Stock [Member] | Executive Officer [Member]
Equity And Stock-Based Compensation [Line Items]
Stocks granted	160,643	125,209
Class A Nonvoting Common Stock [Member] | Employee/Director [Member]
Equity And Stock-Based Compensation [Line Items]
Realized value of option exercised	320,000
Cash received from exercise of stock options	326,000
Class A [Member]
Equity And Stock-Based Compensation [Line Items]
Compensation expense	$ 300,000	$ 187,500
Options granted	12,000	20,000	80,000
Options exercised	47,500		157,600
Class B [Member]
Equity And Stock-Based Compensation [Line Items]
Options granted
Minimum [Member]
Equity And Stock-Based Compensation [Line Items]
Vesting period of stock options	0 years
Maximum [Member]
Equity And Stock-Based Compensation [Line Items]
Vesting period of stock options	4 years