Income Taxes - Income Tax Expense (Benefit) Reconciliation (Details) - USD ($) $ in Thousands	3 Months Ended
Mar. 31, 2017	Mar. 31, 2016
Income Tax Disclosure [Abstract]
Tax at the federal statutory rate	$ 2,326	$ 4,168
State income taxes (net of federal benefit)	233	417
Tax effect of timber at the federal statutory rate of 23.8%	(114)	(206)
Decrease in valuation allowance	(280)	(354)
Other	114	(781)
Total income tax expense	$ 2,279	$ 3,244
Federal statutory rate	35.00%	35.00%
Timber statutory federal rate	23.80%	23.80%

Effective Income Tax Rate Reconciliation, at Timber Transactions Income Tax Rate, Percent

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Effective Income Tax Reconciliation, Timber Taxes, Amount

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Percentage of domestic federal statutory tax rate applicable to pretax income (loss).

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Amount of current tax expense (benefit) and deferred tax expense (benefit) pertaining to income (loss) from continuing operations and income (loss) from discontinued operations.

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Amount of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to increase (decrease) in the valuation allowance for deferred tax assets.

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The amount of income tax expense or benefit for the period computed by applying the domestic federal statutory tax rates to pretax income from continuing operations.

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