Expand backend financial statement parsers

rust/taxonomy/fiscal/v1/bank_lender.surface.json

@@ -156,7 +156,7 @@
       "surface_key": "loans",
       "statement": "balance",
       "label": "Loans",
-      "category": "surface",
+      "category": "noncurrent_assets",
       "order": 30,
       "unit": "currency",
       "rollup_policy": "aggregate_children",
@@ -181,7 +181,7 @@
       "surface_key": "allowance_for_credit_losses",
       "statement": "balance",
       "label": "Allowance for Credit Losses",
-      "category": "surface",
+      "category": "noncurrent_assets",
       "order": 40,
       "unit": "currency",
       "rollup_policy": "aggregate_children",
@@ -201,7 +201,7 @@
       "surface_key": "deposits",
       "statement": "balance",
       "label": "Deposits",
-      "category": "surface",
+      "category": "current_liabilities",
       "order": 80,
       "unit": "currency",
       "rollup_policy": "aggregate_children",
@@ -215,7 +215,7 @@
       "surface_key": "total_assets",
       "statement": "balance",
       "label": "Total Assets",
-      "category": "surface",
+      "category": "derived",
       "order": 90,
       "unit": "currency",
       "rollup_policy": "direct_only",
@@ -229,7 +229,7 @@
       "surface_key": "total_liabilities",
       "statement": "balance",
       "label": "Total Liabilities",
-      "category": "surface",
+      "category": "derived",
       "order": 100,
       "unit": "currency",
       "rollup_policy": "direct_only",
@@ -243,7 +243,7 @@
       "surface_key": "total_equity",
       "statement": "balance",
       "label": "Total Equity",
-      "category": "surface",
+      "category": "equity",
       "order": 110,
       "unit": "currency",
       "rollup_policy": "direct_only",