Concentrations of Credit Risk

12 Months Ended

Dec. 31, 2015

Risks and Uncertainties [Abstract]

Concentrations of Credit Risk

(16) Concentrations of Credit Risk

Financial instruments, which potentially subject the Company to concentrations of credit risk, consist principally of cash, cash equivalents, investments and accounts receivable. The Company places its cash with high-quality financial institutions and, at times, such amounts in non-interest bearing accounts may be in excess of Federal Deposit Insurance Corporation insurance limits. There was no credit based sales for 2015, 2014 or 2013.