Credit Agreement and Senior Unsecured Notes (Tables)

12 Months Ended

Dec. 31, 2016

Debt Disclosure [Abstract]

Schedule of Maturity Dates and Amounts Outstanding Under Credit Agreement and Restated Prudential Note Purchase Agreement

As of December 31, 2016, the maturity dates and amounts outstanding under the Credit Agreement and the Restated Prudential Note Purchase Agreement are as follows:

	Maturity Date		Amount
Credit Agreement—Revolving Facility		June 2018	$	75,000,000
Credit Agreement—Term Loan		June 2020	$	50,000,000
Restated Prudential Note Purchase Agreement—Series A Notes		February 2021	$	100,000,000
Restated Prudential Note Purchase Agreement—Series B Notes		June 2023	$	75,000,000