Earnings Per Share (Details) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended	12 Months Ended
Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Earnings Per Share [Abstract]
Income from continuing operations, net of tax									$ 15,193	$ 21,341	$ 14,224
Weighted average number of common shares outstanding (in shares)									12,334	13,251	13,032
Income from continuing operations, net of tax (in dollars per share)	$ 0.13	$ 0.77	$ 0.56	$ (0.25)	$ 0.81	$ 0.43	$ 0.62	$ (0.26)	$ 1.23	$ 1.61	$ 1.09
Net income from discontinued operations									9,977	20,688	12,257
Discontinued operations, net of tax (in dollars per share)	$ 0.11	$ 0.18	$ 0.28	$ 0.22	$ 0.14	$ 0.30	$ 0.26	$ 0.87	$ 0.81	$ 1.56	$ 0.94
Net income									25,170
Net income	$ 2,604us-gaap_NetIncomeLoss	$ 11,860us-gaap_NetIncomeLoss	$ 11,076us-gaap_NetIncomeLoss	$ (370)us-gaap_NetIncomeLoss	$ 12,499us-gaap_NetIncomeLoss	$ 9,643us-gaap_NetIncomeLoss	$ 11,872us-gaap_NetIncomeLoss	$ 8,015us-gaap_NetIncomeLoss	$ 25,170us-gaap_NetIncomeLoss	$ 42,029us-gaap_NetIncomeLoss	$ 26,481us-gaap_NetIncomeLoss
Net income per share (in dollars per share)	$ 0.24us-gaap_EarningsPerShareBasicAndDiluted	$ 0.95us-gaap_EarningsPerShareBasicAndDiluted	$ 0.84us-gaap_EarningsPerShareBasicAndDiluted	$ (0.03)us-gaap_EarningsPerShareBasicAndDiluted	$ 0.95us-gaap_EarningsPerShareBasicAndDiluted	$ 0.73us-gaap_EarningsPerShareBasicAndDiluted	$ 0.88us-gaap_EarningsPerShareBasicAndDiluted	$ 0.61us-gaap_EarningsPerShareBasicAndDiluted	$ 2.04us-gaap_EarningsPerShareBasicAndDiluted	$ 3.17us-gaap_EarningsPerShareBasicAndDiluted	$ 2.03us-gaap_EarningsPerShareBasicAndDiluted

The pro forma net Income or Loss for the period as if the business combination or combinations had been completed at the beginning of a period.

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The amount of net income or loss for the period per each share in instances when basic and diluted earnings per share are the same amount and reported as a single line item on the face of the financial statements. Basic earnings per share is the amount of net income or loss for the period per each share of common stock or unit outstanding during the reporting period. Diluted earnings per share includes the amount of net income or loss for the period available to each share of common stock or common unit outstanding during the reporting period and to each share or unit that would have been outstanding assuming the issuance of common shares or units for all dilutive potential common shares or units outstanding during the reporting period.

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This element represents the income or loss from continuing operations attributable to the economic entity which may also be defined as revenue less expenses and taxes from ongoing operations before extraordinary items, and noncontrolling interest.

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The amount of net income (loss) from continuing operations per each basic and diluted share of common stock or unit when the per share amount is the same for both basic and diluted shares.

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Amount of income (loss) from a disposal group, net of income tax, reported as a separate component of income before extraordinary items after deduction or consideration of the amount allocable to noncontrolling interests. Includes, net of tax, income (loss) from operations during the phase-out period, gain (loss) on disposal, provision (or any reversals of earlier provisions) for loss on disposal, and adjustments of a prior period gain (loss) on disposal.

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Per basic and diluted share amount, after tax, of income (loss) from the day-to-day business activities of the discontinued operation and gain (loss) from the disposal of the discontinued operation, when the per share amount is the same.

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The portion of profit or loss for the period, net of income taxes, which is attributable to the parent.

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Average number of shares or units issued and outstanding that are used in calculating basic and diluted earnings per share (EPS).

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