Accumulated Other Comprehensive Income - Changes in AOCI (Details) - USD ($) $ in Thousands	3 Months Ended
Mar. 31, 2017	Mar. 31, 2016
Changes in AOCI by component
Beginning balance	$ 36,138	$ 29,729
OCI before reclassifications	3,985	3,633
Amounts reclassified from AOCI	(56)	95
Net period OCI	3,929	3,728
Ending balance	40,067	33,457
Effective Portion of Cumulative Loss on Cash Flow Hedges
Changes in AOCI by component
Beginning balance	(26)	(65)
OCI before reclassifications	47	(368)
Amounts reclassified from AOCI	29	95
Net period OCI	76	(273)
Ending balance	50	(338)
Cumulative Unrealized Gain (Loss) on Available-for-Sale Securities
Changes in AOCI by component
Beginning balance	44,929	37,307
OCI before reclassifications	1,931	(3,400)
Amounts reclassified from AOCI	(85)
Net period OCI	1,846	(3,400)
Ending balance	46,775	33,907
Foreign Currency Translation
Changes in AOCI by component
Beginning balance	(8,765)	(7,513)
OCI before reclassifications	2,007	7,401
Net period OCI	2,007	7,401
Ending balance	$ (6,758)	$ (112)

Accumulated change in equity from transactions and other events and circumstances from non-owner sources, net of tax effect, at period end. Excludes Net Income (Loss), and accumulated changes in equity from transactions resulting from investments by owners and distributions to owners. Includes foreign currency translation items, certain pension adjustments, unrealized gains and losses on certain investments in debt and equity securities, other than temporary impairment (OTTI) losses related to factors other than credit losses on available-for-sale and held-to-maturity debt securities that an entity does not intend to sell and it is not more likely than not that the entity will be required to sell before recovery of the amortized cost basis, as well as changes in the fair value of derivatives related to the effective portion of a designated cash flow hedge.

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-Publisher FASB
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