Stockholders' Equity - Stock Repurchase Program (Details) - USD ($) $ / shares in Units, $ in Thousands	1 Months Ended
Feb. 28, 2019	Jan. 31, 2019
Equity [Abstract]
Number of shares repurchased (in shares)	202	42,488
Average price paid (in usd per share)	$ 8.88	$ 8.47
Total number of shares purchased as part of the program (in shares)	52,725	52,523
Maximum dollar value of shares that remained under the program	$ 1,070	$ 1,072

Number of shares that have been repurchased and retired during the period.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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Namespace Prefix:	us-gaap_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration