7. Disclosures About Fair Value of Financial Instruments (Details) - USD ($) $ in Thousands	Sep. 30, 2018	Dec. 31, 2017
Assets:
Cash and cash equivalents, Carrying amount	$ 17,423	$ 11,907	[1]
Cash and cash equivalents, Fair value	17,423	11,907
Securities, Carrying amount	8,367	28,740
Securities, Fair value	8,367	28,740
Loans held for sale, Carrying Amount	38,595	39,775
Loans held for sale, Fair Value	38,595	39,775
Loans held for investment, net, Carrying Amount	639,511	610,930
Loans held for investment, net, Fair Value	636,558	646,703
Interest receivable, Carrying Amount	2,076	2,007	[1]
Interest receivable, Fair Value	2,076	2,007
Bank owned life insurance, Carrying Amount	19,320	13,950	[1]
Bank owned life insurance, Fair Value	19,320	13,950
Total Assets, Carrying Amount	725,292	707,309
Total Assets, Fair Value	722,339	743,082
Liabilities
Deposits, Carrying Amount	588,985	569,177
Deposits, Fair Value	591,335	571,117
Short-term debt, Carrying Amount	30,000	25,296
Short-term debt, Fair Value	30,000	25,296
Long-term debt, Carrying Amount	46,326	49,733
Long-term debt, Fair Value	46,251	49,869
Interest payable, Carrying Amount	318	260
Interest payable, Fair Value	318	260
Total Liabilities, Carrying Amount	665,629	644,466
Total Liabilities, Fair Value	667,904	646,542
Fair Value Inputs Level 1 [Member]
Assets:
Cash and cash equivalents, Fair value	17,423	11,907
Securities, Fair value	0	19,998
Loans held for sale, Fair Value	0	0
Loans held for investment, net, Fair Value	0	0
Interest receivable, Fair Value	0	0
Bank owned life insurance, Fair Value	0	0
Total Assets, Fair Value	17,423	31,905
Liabilities
Deposits, Fair Value	0	0
Short-term debt, Fair Value	0	0
Long-term debt, Fair Value	0	0
Interest payable, Fair Value	0	0
Total Liabilities, Fair Value	0	0
Fair Value Inputs Level 2 [Member]
Assets:
Cash and cash equivalents, Fair value	0	0
Securities, Fair value	8,367	8,742
Loans held for sale, Fair Value	38,595	39,775
Loans held for investment, net, Fair Value	0	0
Interest receivable, Fair Value	2,076	2,007
Bank owned life insurance, Fair Value	19,320	13,950
Total Assets, Fair Value	68,358	64,474
Liabilities
Deposits, Fair Value	431,124	403,907
Short-term debt, Fair Value	30,000	25,296
Long-term debt, Fair Value	0	0
Interest payable, Fair Value	318	260
Total Liabilities, Fair Value	461,442	429,463
Fair Value Inputs Level 3 [Member]
Assets:
Cash and cash equivalents, Fair value	0	0
Securities, Fair value	0	0
Loans held for sale, Fair Value	0	0
Loans held for investment, net, Fair Value	636,558	646,703
Interest receivable, Fair Value	0	0
Bank owned life insurance, Fair Value	0	0
Total Assets, Fair Value	636,558	646,703
Liabilities
Deposits, Fair Value	160,211	167,210
Short-term debt, Fair Value	0	0
Long-term debt, Fair Value	46,251	49,869
Interest payable, Fair Value	0	0
Total Liabilities, Fair Value	$ 206,462	$ 217,079

[1] 2017 Derived from audited consolidated financial statements.