Stockholders' Equity (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended
	Mar. 31, 2018	Dec. 31, 2017	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
Dividend declaration date	Aug. 06, 2013
Dividend date of record	Jul. 29, 2013
Number of warrants received for each share of common stock (in shares)	5
Number of warrants that entitle holder to purchase one share of common stock (in shares)	25
Number of common shares callable by warrants (in shares)	1
Warrant exercise price (in dollars per share)	$ 7.50
Minimum volume weighted average price per share (in dollars per share)	$ 15.00