Income Taxes - Changes in Unrecognized Tax Benefits (Details) $ in Thousands	12 Months Ended
Dec. 31, 2016 USD ($)
Changes in unrecognized tax benefits [Roll Forward]
Balance at beginning of period	$ 1,720
Increases due to tax positions taken during the current year	1,047
Decreases due to tax positions taken during a prior year	(592)
Decreases due to the lapse of applicable statute of limitations during the current year	(441)
Balance at end of period	1,734
Accrued interest, net of federal benefit, at end of period	174
Unrecognized tax benefits that would impact the effective tax rate, if recognized, at end of period	$ 1,426

A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

No definition available.

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- Definition

Amount of unrecognized tax benefits.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section 50
-Paragraph 15A
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=65882285&loc=SL6600010-109319

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Unrecognized Tax Benefit
-URI http://asc.fasb.org/extlink&oid=6527854

+ Details

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- Definition

Amount of decrease in unrecognized tax benefits resulting from tax positions taken in prior period tax returns.

+ References

+ Details

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- Definition

Amount of increase in unrecognized tax benefits resulting from tax positions that have been or will be taken in current period tax return.

+ References

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- Definition

Amount of interest expense for an underpayment of income taxes.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section 50
-Paragraph 15
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=65882285&loc=d3e32718-109319

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- Definition

Amount of decrease in unrecognized tax benefits resulting from lapses of applicable statutes of limitations.

+ References

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- Definition

The total amount of unrecognized tax benefits that, if recognized, would affect the effective tax rate.

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