Fair Value Measurements (Asset Measured At Fair Value On A Nonrecurring Basis) (Details) - Fair Value Measurements Nonrecurring [Member] - USD ($) $ in Thousands	Mar. 31, 2017	Dec. 31, 2016
Noncovered impaired loans at fair value:
Assets fair value, Total	$ 18,512	$ 17,596
Commercial Real Estate [Member]
Noncovered impaired loans at fair value:
Assets fair value, Total		6,053
One-To-Four Family Residential [Member]
Noncovered impaired loans at fair value:
Loans held for sale	4,980	4,386
Assets fair value, Total	1,593	1,593
Real Estate Construction [Member]
Noncovered impaired loans at fair value:
Assets fair value, Total	447	207
Commercial [Member]
Noncovered impaired loans at fair value:
Assets fair value, Total	11,492	5,357
Level 2 Inputs [Member]
Noncovered impaired loans at fair value:
Assets fair value, Total	4,980	4,386
Level 2 Inputs [Member] | One-To-Four Family Residential [Member]
Noncovered impaired loans at fair value:
Loans held for sale	4,980	4,386
Level 3 Inputs [Member]
Noncovered impaired loans at fair value:
Assets fair value, Total	13,532	13,210
Level 3 Inputs [Member] | Commercial Real Estate [Member]
Noncovered impaired loans at fair value:
Assets fair value, Total		6,053
Level 3 Inputs [Member] | One-To-Four Family Residential [Member]
Noncovered impaired loans at fair value:
Assets fair value, Total	1,593	1,593
Level 3 Inputs [Member] | Real Estate Construction [Member]
Noncovered impaired loans at fair value:
Assets fair value, Total	447	207
Level 3 Inputs [Member] | Commercial [Member]
Noncovered impaired loans at fair value:
Assets fair value, Total	$ 11,492	$ 5,357