Share-Based Payment Arrangements (Narrative) (Details) (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended				3 Months Ended		3 Months Ended						3 Months Ended		3 Months Ended		12 Months Ended	0 Months Ended			3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013	Mar. 31, 2014 Minimum [Member]	Mar. 31, 2014 Maximum [Member]	Mar. 31, 2014 Long Term Incentive Plan 2005 [Member]	May 26, 2005 Long Term Incentive Plan 2005 [Member]	Mar. 31, 2014 Long Term Incentive Plan 2005 [Member] Minimum [Member] Option Issued Prior to 2009 [Member]	Mar. 31, 2014 Long Term Incentive Plan 2005 [Member] Maximum [Member] Option Issued Prior to 2009 [Member]	Mar. 31, 2014 Long Term Incentive Plan 2005 [Member] First Anniversary [Member] Option Issued Prior to 2009 [Member]	Mar. 31, 2014 Long Term Incentive Plan 2005 [Member] Second Anniversary [Member] Option Issued Prior to 2009 [Member]	Mar. 31, 2014 Long Term Incentive Plan 2005 [Member] Third Anniversary [Member] Option Issued Prior to 2009 [Member]	Mar. 31, 2014 Long Term Incentive Plan 2005 [Member] Fourth Anniversary [Member] Option Issued Prior to 2009 [Member]	Mar. 31, 2014 Incentive Stock Options 2010 [Member] Long Term Incentive Plan 2005 [Member]	Mar. 31, 2014 Incentive Stock Options 2011 [Member] 5,000 Grant [Member]	Mar. 31, 2014 Incentive Stock Options 2011 [Member] Long Term Incentive Plan 2005 [Member] 5,000 Grant [Member]	Mar. 31, 2014 Incentive Stock Options 2011 [Member] Long Term Incentive Plan 2005 [Member] 10,000 Grant [Member]	Dec. 31, 2009 Non Qualified Stock Options [Member] Long Term Incentive Plan 2005 [Member]	May 30, 2013 Restricted Stock Units (RSUs) [Member] Long Term Incentive Plan 2005 [Member]	Apr. 10, 2013 Restricted Stock Units (RSUs) [Member] Long Term Incentive Plan 2005 [Member]	Jul. 27, 2012 Restricted Stock Units (RSUs) [Member] Long Term Incentive Plan 2005 [Member]	Mar. 31, 2014 Restricted Stock Units (RSUs) [Member] Long Term Incentive Plan 2005 [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock compensation plan, number of shares authorized						2,000,000
Number of incentive stock options to purchase shares of common stock outstanding					1,083,332
Number of non-qualified stock options to purchase shares of common stock outstanding					304,157												200,000
Number of restricted stock units to receive shares of common stock					355,277
Share-based compensation by share based payment award, remaining available shares for issuance					241,401
Share-based payment award vesting rights													3 years				7 years
Percentage of restricted stock units granted as result of meeting growth rates			50.00%	150.00%
Number of options vested or expected to vest													25,000	5,000
Share-based payment, award vesting period					6 months										7 years
Incentive stock options termination period							5 years	10 years					10 years		10 years	10 years
Non Qualified Stock Options termination period					10 years												10 years
Percentage of options vested or expected to vest					100.00%				10.00%	20.00%	30.00%	40.00%
Total unrecognized compensation cost related to non-vested share-based compensation arrangements	$ 412																				$ 444
Compensation costs expected to be recognized during remainder of 2014	153																				186
Compensation costs expected to be recognized during year two	203																				209
Compensation costs expected to be recognized during year three	53																				49
Compensation costs expected to be recognized during year four	3
Stock Options, Granted		0
Other than options, granted																			122,823	129,463
Other than options, grant date fair value	$ 9.20
Other than options, forfeited																		9,280
Allocated share-based compensation expense	$ 62	$ 0