Derivative Financial Instruments and Hedging Activities - Derivative Offsetting (Details) - USD ($) $ in Thousands	Mar. 31, 2017	Dec. 31, 2016
Offsetting of Derivative Assets
Asset Derivatives	$ 1,034	$ 541
Gross Amounts in the Consolidated Balance Sheets	0	0
Net Amounts of Assets Presented in the Consolidated Balance Sheets	1,034	541
Financial Instruments	0	0
Cash Collateral Received	0	0
Net Amount	1,034	541
Offsetting of Derivative Liabilities
Liability Derivatives	1,653	1,920
Gross Amounts in the Consolidated Balance Sheets	0	0
Net Amounts of Liabilities Presented in the Consolidated Balance Sheets	1,653	1,920
Financial Instruments	0	0
Cash Collateral Received	0	0
Derivative Liability, Fair Value, Amount Not Offset Against Collateral	$ 1,653	$ 1,920