Contracts with Customers

The Company's largest source of revenue is comprised of net interest income on financial assets and financial liabilities, which is explicitly excluded from the scope of ASC Topic 606, Revenue from Contracts with Customers ("ASC 606"), and non-interest income. The Company's significant sources of non-interest income are: service charges, bankcard revenue, trust and investment management fee income and bank owned life insurance (which is also excluded from the ASC 606).

The following table shows the Company's total non-interest income segregated between those within the scope of ASC 606 and those within the scope of other GAAP topics (in thousands):



	Three months ended March 31,
	2019		2018
Non-interest income
Non-interest income from contracts with customers	$	14,746	$	13,465
Non-interest income within the scope of other GAAP topics	1,179		1,027
Total non-interest income	$	15,925	$	14,492

The Company's significant policies related to contracts with customers are discussed below.

Service Charges: Service charges consist of service charges on deposit accounts (monthly service fees, account analysis fees, non-sufficient funds ("NSF") fees and other deposit account related fees). For transaction based fees, the Company's performance obligation is generally satisfied, and the related revenue recognized, at a point in time. For nontransaction based fees, the Company's performance obligation is generally satisfied, and the related revenue recognized, over the period in which the service is provided (typically a month). Generally, payments are received immediately through a direct charge to the customer's account.

Bankcard Revenue: Bankcard revenue is primarily comprised of debit card income and ATM fees. Debit card income is primarily comprised of interchange fees earned whenever the Company's debit cards are processed through card payment networks such as Mastercard. ATM fees are primarily generated when a non-Company cardholder uses a Company ATM or when a Company cardholder uses a non-Company ATM. The Company's performance obligation for bankcard revenue is generally satisfied, and the related revenue recognized, when the services are rendered. Generally, payments are received immediately or in the following month.

Trust and Investment Management Fee Income: Trust and investment management fee income is primarily comprised of fees earned from the management and administration of customer assets. The Company's performance obligation is generally satisfied over time (typically a quarter), and the related revenue recognized, based upon the quarter-end market value of the assets under management and the applicable fee rate. Generally, payments are received a few days after quarter-end through a direct charge to the customer's account.

The following table illustrates the disaggregation by the Company's major revenue streams (in thousands):



	Point of Revenue	Three months ended March 31,
	Recognition	2019		2018
Major revenue streams
Service charges	At a point in time & over time	$	7,321	$	6,862
Bankcard revenue	At a point in time	4,969		4,334
Trust and investment management fee income	Over time	1,642		1,568
Other income	At a point in time & over time	814		701
Non-interest income from contracts with customers		14,746		13,465
Non-interest income within the scope of other GAAP topics		1,179		1,027
Total non-interest income		$	15,925	$	14,492