Stockholders' Equity - Additional Information (Details) - USD ($) $ in Thousands	Mar. 31, 2019	Dec. 31, 2018	Aug. 29, 2011
Stockholders Equity Note [Abstract]
Number of shares authorized and available for repurchase (in shares)	540,000		100,000
Treasury stock, shares (in shares)	81,584	81,584
Value of repurchased common stock	$ 580	$ 580

Amount allocated to previously issued common shares repurchased by the issuing entity and held in treasury.

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-Publisher FASB
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Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
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Balance Type:	debit
Period Type:	instant