Financing Transactions (Controlled Equity Offering) (Details) - USD ($) $ in Millions	Jun. 30, 2015	May. 23, 2014	Mar. 25, 2013
Equity Offering [Member]
Equity Offering [Line Items]
The maximum value of common stock issuable under the controlled equity offering arrangement			$ 15.0
Commission owed to sales agent, expressed as percentage of aggregate gross proceeds from each sale of shares of common stock			3.00%
Amount remaining available under controlled equity offering sale arrangement	$ 3.0
Amendment to the Controlled Equity Offering [Member]
Equity Offering [Line Items]
The maximum value of common stock issuable under the controlled equity offering arrangement		$ 15.0