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Stock Compensation Plans (Details Textual) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Compensation expense	$ 2,804	$ 3,140	$ 1,054
Exercise of stock options	441	153	3
Shares issued	39,205	38,193
Stock Compensation Plans (Textual) [Abstract]
Stock Option	0	0	0
Exercise of stock options, Shares	602
Issuance of stock	444
Shares issued	339
Shares earned and not yet vested	203
Minimum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Restricted stock vesting period	3 years
Performance stock vesting period	3 years
Maximum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Restricted stock vesting period	4 years
Performance stock vesting period	4 years
Two Thousand and Nine Equity Incentive Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares allowed to be issued	6,633
Percentage of Shares issued and outstanding	16.90%
Restricted Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Compensation expense	1,849	1,415	905
Unamortized future compensation expense	2,671
Performance Shares [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Compensation expense	956	1,725	149
Unamortized future compensation expense	1,200
Number of shares to be earned from awards granted	0	276	221
Shares vested	136
Stock Compensation Plans (Textual) [Abstract]
Shares earned and not yet vested	521	534
Stock Options [Member] | Minimum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Options granted terms	6 years
Vesting periods	1 year
Stock Options [Member] | Maximum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Options granted terms	10 years
Vesting periods	5 years
Long Term Incentive Compensation [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Compensation expense	0		2,424
Unamortized future compensation expense	$ 0

X

- Definition

Represents the expense recognized during the period arising from equity-based compensation arrangements (for example, shares of stock, unit, stock options or other equity instruments) with employees, directors and certain consultants qualifying for treatment as employees.

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Estimated period over which an employee is required to provide service in exchange for the equity-based payment award, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Period which an employee's right to exercise an award is no longer contingent on satisfaction of either a service condition, market condition or a performance condition, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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The number of grants made during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

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The number of non-vested equity-based payment instruments, excluding stock (or unit) options, that validly exist and are outstanding as of the balance sheet date.

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Number of share options (or share units) exercised during the current period.

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Share based compensation arrangement by Share based payment award percentage of shares issued and outstanding as of the balance sheet date.

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Share based compensation awards number of shares allowed to be issued.

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Stock issued during period shares stock options exercised net.

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