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Stockholders' Equity - Common Stock Dividends and Buyback Program (Details)	1 Months Ended			3 Months Ended		9 Months Ended		16 Months Ended
	Dec. 31, 2016 $ / shares	Jun. 30, 2015 USD ($) $ / shares shares	Dec. 31, 2013 $ / shares	Mar. 31, 2017 quarterly_dividend $ / shares shares	Mar. 31, 2015 $ / shares	Mar. 31, 2017 USD ($) increase quarterly_dividend $ / shares shares	Mar. 31, 2016 USD ($) $ / shares shares	Mar. 31, 2017 quarterly_dividend shares	May 12, 2015 USD ($)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares of common stock outstanding | shares				33,062,297		33,062,297		33,062,297
Cash dividend (in dollars per share) | $ / shares	$ 0.065		$ 0.10	$ 0.07	$ 0.05
Number of increases to quarterly cash dividend | increase						2
Cash dividends to common stockholders						$ 6,116,323
Common Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of quarterly dividends declared | quarterly_dividend				3		3		3
Number of shares repurchased | shares						73,455	2,230
Average price of shares repurchased (in dollars per share) | $ / shares						$ 6.26	$ 5.25
Value of shares repurchased						$ 459,858	$ 11,698
Common Stock | 2015 Share Repurchase Program
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Authorized amount to be repurchased									$ 5,000,000
Number of shares repurchased | shares		265,762					202,390	0
Average price of shares repurchased (in dollars per share) | $ / shares		$ 6.05					$ 5.80
Value of shares repurchased		$ 1,609,008					$ 1,173,899

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