Quarterly report pursuant to Section 13 or 15(d)

Equity Method Investments Schedule of Summarized Financial Information (Details)

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Equity Method Investments Schedule of Summarized Financial Information (Details) - USD ($)
 3 Months Ended
Mar. 31, 2017
Dec. 31, 2016
Equity Method Investments and Joint Ventures [Abstract]    
Current assets $ 34,083 $ 30,837
Non-current assets 20,156 21,822
Current liabilities 19,648 20,455
Non-current liabilities 1,260 1,307
Revenue 34,429,000  
Net income 6,449,000  
Schedule of Equity Method Investments [Line Items]    
Carrying value 155,623,000 156,527,000
Wireless Maritime Services    
Schedule of Equity Method Investments [Line Items]    
Carrying value 153,695,000 154,614
Santander    
Schedule of Equity Method Investments [Line Items]    
Carrying value $ 1,928,000 $ 1,913