Parent Company only Condensed Financial Information - Balance Sheets (Details) - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Assets
Cash and cash equivalents	$ 344,092	$ 122,403	$ 112,605	$ 373,565
Total assets	2,361,579	1,617,103
Liabilities and Shareholders' Equity
Short-term borrowings	3,000
Shareholder's equity	245,436	184,358	173,396	169,741
Total liabilities and shareholders' equity	2,361,579	1,617,103
HCC (Parent)
Assets
Cash and cash equivalents	1,686	10,159	$ 19,009	$ 11,193
Investment in subsidiary bank	246,357	173,453
Other assets	400	953
Total assets	248,443	184,565
Liabilities and Shareholders' Equity
Short-term borrowings	3,000
Other liabilities	7	207
Shareholder's equity	245,436	184,358
Total liabilities and shareholders' equity	$ 248,443	$ 184,565