Stock Compensation (Details 4) $ / shares in Units, $ in Thousands			2 Months Ended
	Jul. 31, 2015 USD ($)	Jan. 31, 2014 USD ($) shares	Sep. 30, 2015 USD ($) item director $ / shares shares
Stock-based Compensation
Number of independent directors | director			3
Stock -based compensation expense | $			$ 673
Other disclosures
Unrecognized compensation costs | $			$ 4,500
Performance-Based | Director Shares
Stock-based Compensation
Shares transferred		20,125
Number shares transferred, as adjusted for the effect of dividends			60,375
Number of shares held by each director			18,375
Outstanding shares			55,125
Number to performance conditions | item			2
Period within which business combination is to be completed from IPO			21 months
Percentage of forfeitable shares under certain conditions			25.00%
Forfeitable shares under certain conditions			(13,781)
Minimum stock trading price | $ / shares			$ 13
Number of days of trading period of the minimum trading price | item			20
Period of trading period of the minimum stock trading price			30 days
Period of forfeiture condition			5 years
Aggregate fair value | $		$ 400
Stock -based compensation expense | $	$ 0		$ 500
Assumptions used in estimating the fair value of stock options granted
Risk-free interest rate			1.96%
Expected life (in years)			6 years 5 months 19 days
Estimated volatility factor			31.16%
Expected dividends			0.00%
Other disclosures
Unrecognized compensation costs | $			$ 100