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Stock-Based Compensation (Details 2) - Warrants outstanding [Member] - $ / shares
6 Months Ended 12 Months Ended
Dec. 31, 2017
Jun. 30, 2017
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Warrants Outstanding 139,032 139,032
Warrants Exercisable 139,032 139,032
Weighted Average Exercise Price $ 9.30 $ 9.30
Average Remaining Contractual Life 4 months 17 days 10 months 17 days