Stock Based Incentive Plan (Details Textual) (USD $) In Millions, except Share data, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011
Stock Based Incentive Plan (Textual) [Abstract]
Purchase price of common shares as a percentage of fair market value	100.00%
Unvested restricted stock awards outstanding under the plan	175,008	156,297
Percent of optioned shares become exercisable each year from three to five years	33.30%
Stock Based Incentive Plan (Additional Textual) [Abstract]
Contractual term	10 years
Period optioned shares become 100% exercisable	2 years
Share awards available for future grant	612,726
Options to purchase common stock outstanding	584,349	497,499
Stock options exercised	0
Total unrecognized compensation expense related to nonvested share-based compensation arrangements	$ 1.3
Unrecognized compensation expense expected to be recognized over weighted average period	2 years 6 months
Maximum [Member]
Stock Based Incentive Plan (Textual) [Abstract]
Period optioned shares begin to become exercisable	10 years
Minimum [Member]
Stock Based Incentive Plan (Textual) [Abstract]
Period optioned shares begin to become exercisable	3 years
Stock Based Incentive Plan [Member]
Stock Based Incentive Plan (Textual) [Abstract]
Unvested restricted stock awards outstanding under the plan	175,008
Approved options granted and share awards to employees	1,500,000
Restricted Stock [Member]
Stock Based Incentive Plan (Textual) [Abstract]
Purchase price of common shares as a percentage of fair market value	100.00%
Period optioned shares begin to become exercisable	3 years
Percent of optioned shares become exercisable each year from three to five years	33.30%