Organization and Summary of Significant Accounting Policies Organization and Description of Buinsess (Details) (USD $)	0 Months Ended
	Oct. 23, 2012	Oct. 17, 2012	Oct. 11, 2012
Initial Public Offering [Line Items]
First day tax expense to net income from continuing operations recorded to establish a net deferred tax liability for differences between book and tax differences			$ 54,142,000
Issuance of Equity
Initial Public Offering [Line Items]
Shares issued upon initial public offering	1,875,000	14,375,000	12,500,000
Common stock issued pursuant to underwriters over allotment option		1,875,000
Stock price per share at initial public offerring		$ 17.50	$ 17.50
Company received net proceeds from initial public offerring	$ 234,100,000	$ 234,100,000