Shareholders' Equity And Stock-Based Compensation (Narrative) (Details) (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended		12 Months Ended
	Mar. 31, 2015	Mar. 31, 2014	Dec. 31, 2012	Dec. 31, 2010	Dec. 31, 2014
Deferred Compensation Arrangement with Individual, Share-based Payments [Line Items]
Aggregate number of shares of common stock which awards could be granted	50,000				175,000
Maximum amount of common stock participants may elect to purchase	$ 100
Window period	20 days
Weighted average fair value of options granted	$ 4.37	$ 3.85
Expected forfeiture rate of stock options	0.00%
Weighted average remaining contractual life of options exercisable, years	4 years 1 month 6 days
Stock option expense	169	142
Unrecognized compensation costs on non-vested awards	$ 904
Unrecognized compensation costs, period of recognition, years	2 years 3 months 15 days
2006 Equity Incentive Plan [Member]
Deferred Compensation Arrangement with Individual, Share-based Payments [Line Items]
Aggregate number of shares of common stock which awards could be granted			699,000
Increase in maximum number of shares approved			300,000	250,000
Vesting period of options under equity incentive plan	3 years
Shares issued in lieu of cash for director fees under director program	0	0
2001 Stock Option Plan And Non-Employee Directors' Stock Option Plan [Member]
Deferred Compensation Arrangement with Individual, Share-based Payments [Line Items]
Aggregate number of shares of common stock which awards could be granted	147,000
Management Purchase Program [Member]
Deferred Compensation Arrangement with Individual, Share-based Payments [Line Items]
Shares purchased for award	0	0
Employee Stock Purchase Plan [Member]
Deferred Compensation Arrangement with Individual, Share-based Payments [Line Items]
Increase in maximum number of shares approved	100,000
Maximum number of shares approved under purchase plan	100,000
Shares purchased for award	3,000	5,000
Maximum [Member] | 2006 Equity Incentive Plan [Member]
Deferred Compensation Arrangement with Individual, Share-based Payments [Line Items]
Term of options	10 years