Restricted Stock Units (RSUs) (Schedule of Nonvested Share Vesting Activity) (Details) - Restricted Stock Units (RSUs) [Member]	Jun. 30, 2018 shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting in future period	713,000
2018 [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting in future period	121,250
2019 [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting in future period	309,250
2020 [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting in future period	176,250
2021 [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting in future period	106,250