Borrowing Arrangements - Line of Credit with a Corresponding Bank (Details) $ in Thousands	Dec. 31, 2015 USD ($)
Borrowing Arrangements
Amount outstanding	$ 3,000
HCC (Parent)
Borrowing Arrangements
Amount outstanding	3,000
Line of credit | Line of credit
Borrowing Arrangements
Line of credit	5,000
Amount outstanding	$ 3,000