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Deposits (Details) - USD ($) $ in Thousands | 6 Months Ended | 12 Months Ended
--- | --- | ---
Jun. 30, 2019 | Dec. 31, 2018
Deposits [Line Items] |  |
Deposits | $ 1,529,645 | $ 1,455,299
Average balance, deposits | $ 1,476,691 | $ 1,399,840
Deposits, weighted average interest rate during the period | 1.63% | 1.11%
Non-interest-bearing transaction accounts |  |
Deposits [Line Items] |  |
Deposits | $ 301,914 | $ 280,769
Average balance, deposits | $ 255,691 | $ 241,529
Deposits, weighted average interest rate during the period | 0.00% | 0.00%
Interest-bearing transaction accounts |  |
Deposits [Line Items] |  |
Deposits | $ 244,608 | $ 229,612
Average balance, deposits | $ 224,873 | $ 269,943
Deposits, weighted average interest rate during the period | 1.65% | 0.99%
Money market accounts |  |
Deposits [Line Items] |  |
Deposits | $ 596,520 | $ 516,045
Average balance, deposits | $ 574,666 | $ 491,756
Deposits, weighted average interest rate during the period | 1.87% | 1.09%
Certificates of deposit |  |
Deposits [Line Items] |  |
Deposits | $ 147,216 | $ 153,022
Average balance, deposits | $ 162,082 | $ 94,172
Deposits, weighted average interest rate during the period | 2.45% | 1.70%
Wholesale deposits |  |
Deposits [Line Items] |  |
Deposits | $ 239,387 | $ 275,851
Average balance, deposits | $ 259,379 | $ 302,440
Deposits, weighted average interest rate during the period | 2.19% | 1.95%

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- Definition The aggregate of all deposit liabilities held by the entity, including foreign and domestic, interest and noninterest bearing; may include demand deposits, saving deposits, Negotiable Order of Withdrawal (NOW) and time deposits among others. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03.12) -URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878 + Details
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