CONSOLIDATED STATEMENTS OF CASH FLOWS (USD $) In Thousands, unless otherwise specified	3 Months Ended
Mar. 31, 2015	Mar. 31, 2014
Cash flows from operating activities:
Net income	$ 13,732	$ 4,290
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation	876us-gaap_DepreciationNonproduction	966us-gaap_DepreciationNonproduction
Amortization of premiums, discounts and intangibles	335us-gaap_AdjustmentForAmortization	267us-gaap_AdjustmentForAmortization
Provision for loan losses	130us-gaap_ProvisionForLoanAndLeaseLosses	1,926us-gaap_ProvisionForLoanAndLeaseLosses
Loans held for sale originated	(843,734)	(562,594)
Proceeds from the sale of loans held for sale	860,209	678,657
Realized and unrealized gains on mortgage banking activities	(16,166)cfnl_GainLossOnSalesOfMortgageLoans	(7,383)cfnl_GainLossOnSalesOfMortgageLoans
Purchase of investment securities-trading	(700)	(678)
Unrealized gain on investment securities-trading		(169)
Unrealized loss on investment securities-available for sale		17
Gain on call of investment securities available-for-sale	(202)
Stock compensation expense, net of tax benefits	553us-gaap_ShareBasedCompensation	411us-gaap_ShareBasedCompensation
Increase in cash surrender value of bank-owned life insurance	(118)us-gaap_BankOwnedLifeInsuranceIncome	(119)us-gaap_BankOwnedLifeInsuranceIncome
Increase (decrease) in accrued interest receivable and other assets	(7,928)	(7,218)
Increase (decrease) in accrued interest payable, escrow liabilities and other liabilities	4,066	(10,986)
Net cash provided by operating activities	11,053	97,387
Cash flows from investing activities:
Net purchases of premises and equipment	(762)	75
Proceeds from the sale of investment securities available-for-sale		10,617
Proceeds from maturity and call of investment securities available-for-sale	23,315	1,500
Purchase of mortgage-backed securities available for sale		(2,050)
Purchase of investment securities available-for-sale	(752)
Purchase of other investments	(133)	(2,250)
Proceeds from the sale of other investments	1,025	6,762
Redemptions of investment securities available-for-sale	3,427	4,759
Redemptions of investment securities held-to-maturity	5	125
Acquisitions, net of cash and cash equivalents		36,472
Net increase (decrease) in loans receivable, net of deferred fees and costs	(43,837)	(67,959)
Net cash used in investing activities	(17,712)	(11,949)
Cash flows from financing activities:
Net increase (decrease) in deposits	109,801us-gaap_IncreaseDecreaseInDeposits	22,865us-gaap_IncreaseDecreaseInDeposits
Net decrease in other borrowed funds - short term	(71,673)	(21,057)
Net increase (decrease) in mortgage funding checks	3,562	(54)
Proceeds from FHLB advances		75,000
Repayment of FHLB advances	(10,000)	(150,000)
Stock options exercised	762	113
Stock issuance	7
Dividends on common stock	(3,534)us-gaap_PaymentsOfDividendsCommonStock	(2,558)us-gaap_PaymentsOfDividendsCommonStock
Net cash provided by (used in) financing activities	28,925	(75,691)
Net increase in cash and cash equivalents	22,266	9,747
Cash and cash equivalents at beginning of year	38,189	29,209
Cash and cash equivalents at end of the period	60,455	38,956
Cash paid during the period for:
Interest	5,629us-gaap_InterestPaid	4,821us-gaap_InterestPaid
Income taxes	5,319us-gaap_IncomeTaxesPaid	3,703us-gaap_IncomeTaxesPaid
Acquisition of noncash assets and liabilities:
Assets acquired		265,364us-gaap_FairValueOfAssetsAcquired
Liabilities assumed		$ 301,836us-gaap_LiabilitiesAssumed1

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The gains and losses included in earnings that represent the difference between the sale price and the carrying value of loans made to finance real estate acquisitions. This element refers to the cash proceeds of the sale.

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This item represents the gross profit realized on the sale of debt or equity securities categorized neither as held-to-maturity nor trading securities.

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Earnings on or other increases in the value of the cash surrender value of bank owned life insurance policies.

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Amount of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. Excludes cash and cash equivalents within disposal group and discontinued operation.

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The fair value of assets acquired in noncash investing or financing activities.

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The net cash inflow or outflow for the increase (decrease) in the beginning and end of period deposits balances.

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The change in cash during the period due to the net increase or decrease in outstanding checks, the liability that represents checks that have been issued but that have not cleared. The entity may classify these cash flows as financing or operating activities.

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The amount of cash paid for interest during the period.

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The fair value of liabilities assumed in noncash investing or financing activities.

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The increase (decrease) in cash associated with the entity's continuing operating, investing, and financing activities. While for technical reasons this element has no balance attribute, the default assumption is a debit balance consistent with its label.

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Amount of cash inflow (outflow) of financing activities, excluding discontinued operations. Financing activity cash flows include obtaining resources from owners and providing them with a return on, and a return of, their investment; borrowing money and repaying amounts borrowed, or settling the obligation; and obtaining and paying for other resources obtained from creditors on long-term credit.

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Amount of cash inflow (outflow) of investing activities, excluding discontinued operations. Investing activity cash flows include making and collecting loans and acquiring and disposing of debt or equity instruments and property, plant, and equipment and other productive assets.

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Amount of cash inflow (outflow) from operating activities, excluding discontinued operations. Operating activity cash flows include transactions, adjustments, and changes in value not defined as investing or financing activities.

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Net income after adjustments for dividends on preferred stock (declared in the period) and/or cumulative preferred stock (accumulated for the period).

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Amount of cash outflow in the form of ordinary dividends to common shareholders of the parent entity.

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The cash outflow to acquire debt and equity securities not classified as either held-to-maturity securities or trading securities which would be classified as available-for-sale securities and reported at fair value, with unrealized gains and losses excluded from earnings and reported in a separate component of shareholders' equity.

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The cash outflow associated with the acquisition of a business, net of the cash acquired from the purchase.

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The cash outflow for the purchase of securities issued by a governmental agency or corporation (for example, GNMA or FHLMC) or by private issuers (for example, banks and mortgage banking enterprises) secured by and repaid from underlying mortgages, which were designated as available for sale when acquired.

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The cash inflow associated with maturities (principal being due), prepayments and calls (requests of early payments) on securities not classified as either held-to-maturity securities or trading securities which are classified as available-for-sale securities.

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The cash inflow associated with the maturity, prepayments and calls (requests for early payments) of debt securities designated as held-to-maturity.

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Amount of cash inflow (outflow) from sales and purchases of trading securities.

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The net cash inflow or outflow in other borrowings not otherwise defined in the taxonomy.

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The cash inflow associated with the sale of debt and equity securities classified as available-for-sale securities.

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The cash inflow resulting from the sale of loans classified as held-for-sale, including proceeds from loans sold through mortgage securitization.

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The cash inflow associated with the sale of other investments not otherwise defined in the taxonomy.

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The cash inflow associated with the amount received from holders exercising their stock options. This item inherently excludes any excess tax benefit, which the entity may have realized and reported separately.

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Amount of expense related to estimated loss from loan and lease transactions.

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The cash outflow for the payment of loan drawn from Federal Home Loan.

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The aggregate amount of noncash, equity-based employee remuneration. This may include the value of stock or unit options, amortization of restricted stock or units, and adjustment for officers' compensation. As noncash, this element is an add back when calculating net cash generated by operating activities using the indirect method.

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Amount of unrealized holding gain (loss) recognized in the income statement for investments in debt and equity securities and other forms of securities that provide ownership interests classified as trading.

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