Commitments and Contingencies (Details)	Jun. 30, 2016 USD ($)
Letter of Credit [Member]
Loss Contingencies [Line Items]
Available letter of credit subfacility utilized	$ 500,000
$200 million revolving credit facility, LIBOR plus 1.25%-1.75%, due December 2019 (1) | Letter of Credit [Member]
Loss Contingencies [Line Items]
Credit facility, borrowing capacity	25,000,000
$200 million revolving credit facility, LIBOR plus 1.25%-1.75%, due December 2019 (1) | Line of Credit [Member] | Revolving Credit Facility [Member]
Loss Contingencies [Line Items]
Credit facility, borrowing capacity	$ 200,000,000.0